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Can I find solved Try These of Maths NCERT for Class-8?

Q. In the following figure, each of the four shaded rectangles has an area of 21 cm

^{2}^{ }and a perimeter of 20 cm.What is the perimeter of the square formed in the middle?A.12cm

B.16cm

C.20cm

D.24cm

A solid cylinder has surface area of 462 sq cm.Its curved surface area is one third of its total surface area.find the volume of the cylinder.

What will be the volume of the cylinder in which:area of the base is 45 sq.cm and height is 6 cm??

A river 2m deep and 45m wide is flowing at the rate of 3 km/h.Find the amount of water that runs into the sea per minute.

Q- The parallel lines of a trapezium are 25 cm and 11cm ,while its non-parallel sides are 15 cm and 13 cm .Find the area of trapezium.

A road roller takes 750 complete revolutions to move once over to level a road. Find the area of the road if the diameter of a road roller is 84 cm and length is 1 m.

the surface area of the six faces of a rectangular solid are 4,4,8,8,18, and 18 square centimeter. The volume of the solid , in cubic centimeter is ...

Ex-14 ( F) question-6 , 9 th part

A 42 cm long windshield wiper covers a quadrant and it sweeps across the glass. If the outer 35 cm of the wiper is fitted with scrubber, then the area of the glass wiped clean by the wiper in one sweep will be

The diameter of a roller is 84cm and its length is 120cm. It takes 500 complete revolutions to move once over to level a playground. Find the area of the playground in m

^{2}.The length,breadth and height of a room are 5m, 4m and 3m respectively. Find the cost of white washing the inner of the room and ceiling at the rate of Rs 50 per square metre.

find the number of coins,1.5cm in diameter and 0.2 cm thick,to be melted to form a right circular cylinder with a height of 10 cm and a diameter of 4.5cm.

if each edge of a cube is doubled,

1.how many times will its surface area increase?

2.how many times will it volume increase?

verify euler's formula for cuboid prism of pentagon base,pyramid of square and pentagon base

If the length of each edge of a cube is doubled, by how many times does its volume and surface area increase?

Pls do not refer any link.

water is pouring into a cuboidal reservoir at the rate of 60 litres per minute. if the volume of the tank is 108m cube, find the number of hours it will take to fill the reservoir?

the altitude of a triangle is five thirds it's corresponding base. if the altitude was incresed by 4 cm and base decreased by 2 cm the area would remain the same. find the base and altitude.

find the area of a rhombus whose side is 6 cm and whose altitude is 4 cm. if one of its diagonal is 8 cm long, find the length of another diagonal.

how is the formula for the area of an equilateral triangle obtained???

a = measure of a side

the diameter of the roller 120 cm long is 84 cm. if it takes 500 complete revolutions to level a playground, determine the cost of levelling at the rate of 30 paise per sq. m.plzz its urgent plzz give me fast ans...today is my test

The lengths of parallel sides of trapezium is 12 cm and 15 cm.Area of trapezium is 189msq.

What is the distance between the parallel sides?

The radius and height of a cylinder are in the ratio 5:7 and its volume is 550 cu cm . Find its radius?

find the side of a cube whose surface area is 600 cm

^{2}the rainfall recorded on a certAIN DAY WAS 5 c find the volume of water that fell on 2 hectare field

A solid iron rectangular block of dimensions 4.4m*2.6m*1m is cast into a hollow cylindrical pipe of internal radius 30cm and thickness 5cm.Find the length of the pipe.

please answer the question fast please the answer should be112m.

Water flows out through a circular pipe whose internal diameter is 2 cm, at the rate of 6 metre per second into a cylindrical tank , the radius of whose base is 60 cm. Find the rise in the level of water in30 minutes?

1) quadrilateral ABCD where AB = 5cm , BD = 6cm, CD = 5.8 cm,DA = 4.3 cm, BC =5.5cm

2) quadrilateral PQRS where PQ = QR = RS =SP=8cm and angle R = 85° .

3) quadrilateral MNOP where MN =3cm , NO=5cm, OP =5cm,PM=4cm and angleN = 105°

a rectangular strip 25cm

cm is rotated about the longer side .find the total surface area of the solid thus generated.X 7The lateral surface area of a hollow cylinder is 4224 cm

^{2}. It is cut along its height and formed a rectangular sheet of width 33 cm. Find the perimeter of rectangular sheet?a saree is 5 meter long and 1.3 meter wide. a border of width 25 centimeter is printed along all side .find the cost of printing the border at 1rupees per 100 centimeter

^{2.}hema bought 2 pairs of jeans for rs 725each she sold one of them at a gain of 8% and the other at

a loss of 4% find her gain or loss percent on the whole transaction

ans gain of 2%

The outer dimensions of a closed wooden box are 10cm by 8cm by 7cm. Thickness of the wood is 1cm. Find the total cost of wood required to make the box if 1cm

^{3}of wood costs Rs.2A iron pipe is 21 m long and its exterior diameter is 8cm.If the thickness of the pipe is 1cm and iron weight 8g/cm

^{3},find the weight of pipe?1)parallelogram QRST in which QR =6cm,RS=4cm ,and angleS=45°

2)quadrilateral IJKL in which IJ=4cm ,JK=2.9cm, KL=3.6cm, LI=4.2cm, and JL=5.2 cm

The diameter of a wheel of a bus is 90cm which makes 315 revolutions per minute. Determine its speed in kmph.

7. How many tiles measuring 20cm x 20cm each will be required to pave a 1.5 m wide footpath around a grassy plot of 25m x 16 ,?

What is the answer of ncert maths book class 8, ch. MENSURATION pg 176, TRY THESe Q. 3 For future i would like to know where can i get the answers of try these of ncert book

The base and corresponding altitude of a parallelogram are 10 and 12 cms.if the other altitude is 8 cms find the length of other pair of parallel sides.please help me with this question.

Thnx

give the curved surface area,total surface area,volume(formula)-cube, cuboid, cylinder.give the perimeter,area (formula)-square, rectangle,circle, triangle, parallelogram, rhombus, trapezium????????The floor of a building consists of 3000 tiles which are rhombus shaped and each of its diagonals are 45 cm and 30 cm in length. Find the total cost of polishing the floor, if the cost per m

^{2}is Rs 4.In a square PQRS, PQ = (5a - 17)cm and QR = (2a + 4). Findthem.

The shape of a garden is rectangular in the middle and semi circular at the ends as shown in the diagram. Find the area and the perimeter of the garden [Length of rectangle is 20 − (3.5 + 3.5) metres]

The lateral surface area of a hollow cylinder is 4224 cm square. It is cut along its height and formed a rectangular sheet of of width 33 cm. Find the perimeter of the rectangular sheet?

EXPERTS PLZ ANSWER MY QUESTION PLZ PLZ PLZ PLZ PLZ PLZ PLZ PLZ

sir, please give me the proper solution with explation of following questions?

Q.A box with lid is made of wood which is 3 cm thick. It's external length,breadth and hieht are 56 cm,39 cm and 30 cm respectively.Find the capacity of the box.Also find the volume of wood used to make this box.

Q.If V is the volume of cuboid of dimension a,b and c and S is it's surface area , then prove that:-

1/v =2/s [1/a +1/b +1/c]the dimensions of an open box are 50 cm , 40cm and 23 cm .its thickness is 3 cm. if 1 cubic cm of metal used in the box weighs 0.5 gms , find the weight of the box

Find the altitude of rhombus whose area is 420cm(sq) and the perimerter is 140 cm..

A) cube with side 5 cm

B) sphere with radius 3 cm

C) cuboid with sides 2 cm, 3 cm, 10 cm

D) cylinder with radius 2 cm and 10 cm

a suitcase with measure 80cm x 48cm x 24cm is to be covered with a tarpaulin cloth. How many metres of tarpaulin of width 96cm is required to cover 100 such suitcases?

both of the same height but of different diameters.How much aluminium will be required to cover Dewar A compared to that required for Dewar B?

(Note: The base and the lid are NOT made up of aluminium.)

(1 hectare is 10000m square)

mensuration powerpoint presentation

Q.8. Find the curved surface area of a garden roller whose length and diameter are 1.5 m and 1.4 m respectively. How much area can it level in 200 revolutions?

Q.9. The diameter of a 120 cm long roller is 84 cm. It takes 1000 complete revolutions moving once over to level a playground. What is the area of the playground ?

^{2}what is the shape of cistern please tell me fast

The area of a courtyard is 3750m2. Find the cost of covering it with gravel to a height of 1cm if the gravel costs Rs 6.40 per cubic metre

IF ANGLE A = 36 27' 46" AND ANGLE B = 28 43' 39" , FIND ANGLE A + ANGLE B

The areas of 3 adjacent faces of a cuboid are 180 sq.cm , 96 sq. cm and 120 sq. cm . Find the volume of the cuboid ?A room 6m long and 4m wide needs 1000 tiles for its floor. How many tiles will be nedded for a hall 12m long and 8m wide?

what is the formula for area of circle??

Q.10. The volume of the mud taken out on digging a cylindrical tank is 1540 ${m}^{3}$. Find the depth of the tank if the diameter of the base is 7 m.

A closed wooden box 80cm long,65cm wide and 45cm high, is made of wood 2.5cm thick.Find the capacity of the box and its weight if 100cm

^{3}of wood weighs 8gthe inner circumference of a circular track is 220 m. The track is 7 m wide everywhere. Calculate the cost of putting fence along the outer circle at Rs.2 per metre.what is difference between polygon and quadrilateral??plz answer faster.....

3 men or 5 women can do a work in 12 days. how long will 6 men and 5 women take to do it.

A square of 5m length and 75cm width is to bordered with lace 6cm wide. Find the cost of putting the border at the rate of Rs.0.50 per sq. cm.

Find the height of a cuboid whose base area is 180 cm

^{2}and volume is 900 cm^{3}?a customer paid rs 16800 to purchase a colour tv .if this includes vat @12% ,determine the marked price of the tv .what will be the new selling price if the vat changes to 10%

this question is from percentage lesson