NCERT Solutions
Board Paper Solutions
Ask & Answer
School Talk
Login
GET APP
Login
Create Account
Popular
Latest
Expert Answers
ALL
Admya Maini
Subject: Maths
, asked on 11/1/18
$6.Aclosedcylindricalwater\mathrm{tan}kismadefromaplasticsheet.Itsdiameteris1.4mandheight3.5m.Find\phantom{\rule{0ex}{0ex}}\left(i\right)Lateral\left(curved\right)surfaceareaofthe\mathrm{tan}k.\phantom{\rule{0ex}{0ex}}\left(ii\right)actualareaoftheplasticsheetusedif\frac{1}{13}ofsheetactuallyusedwaswastedinmaking\mathrm{tan}k.(Take\mathrm{\pi}=3.14)\phantom{\rule{0ex}{0ex}}\phantom{\rule{0ex}{0ex}}10.Alongahighway50conicalpillarsareconstructed.EachPillarhasbasediameter28cmandverticalheight18cm.\phantom{\rule{0ex}{0ex}}findthetotal\mathrm{cos}tofpantingthesepillarsattherateofRs.120per{m}^{2}.(Take\mathrm{\pi}=\frac{22}{7})$
Answer
2
Admya Maini
Subject: Maths
, asked on 11/1/18
$6.Aclosedcylindricalwater\mathrm{tan}kismadefromaplasticsheet.Itsdiameteris1.4mandheight3.5m.Find\phantom{\rule{0ex}{0ex}}\left(i\right)Lateral\left(curved\right)surfaceareaofthe\mathrm{tan}k.\phantom{\rule{0ex}{0ex}}\left(ii\right)actualareaoftheplasticsheetusedif\frac{1}{13}ofsheetactuallyusedwaswastedinmaking\mathrm{tan}k.(Take\mathrm{\pi}=3.14)\phantom{\rule{0ex}{0ex}}\phantom{\rule{0ex}{0ex}}10.Alongahighway50conicalpillarsareconstructed.EachPillarhasbasediameter28cmandverticalheight18cm.\phantom{\rule{0ex}{0ex}}findthetotal\mathrm{cos}tofpantingthesepillarsattherateofRs.120per{m}^{2}.(Take\mathrm{\pi}=\frac{22}{7})$
Answer
2
Snigdha Shinde
Subject: Maths
, asked on 10/1/18
The ratio of the area of a rectangle A to that of rectangle B is 1:3. If 1/4th of rectangle A is shaded, what fraction of rectangle B is shaded?
A) 1/12
B) 1/16
C) 15/16
D) 11/12
Answer
1
Snigdha Shinde
Subject: Maths
, asked on 10/1/18
Four circles of diameter d cm are arranged in such a way that they touch each other. A square is formed by joining the centers of the four circles. What is the area of the shaded part?
A) d² (1-π)
B) d² (4-π)
C) d²/4 - πd²/4
D) d² - πd²/4
Answer
2
Devhuti
Subject: Maths
, asked on 9/1/18
a cuboidal solid is cut into two cuboids of equal volumes . find the ratio between the surface area of the cube and the surface area of one cuboid
Answer
2
Devhuti
Subject: Maths
, asked on 9/1/18
a right circular cone of diameter K cm and the height 12 cm rests on the base of a right circular cylinder of radius K cm the cylinder is filled with water to a height of 12 cm . if the cone is removed from the cylinder , then find the fall in the level of water .
Answer
1
Devhuti
Subject: Maths
, asked on 9/1/18
a hemispherical tank full of water is emptied by a pipe at the rate of 3 whole 4/7 litres per second . how much time will it take to empty the tank , if the tank is 3 m in diameter
Answer
1
Devhuti
Subject: Maths
, asked on 9/1/18
a sphere of diameter 2a is dropped is dropped into a cylindrical vessel partly filled with water . the diameter of the base of the vessel is 8a/3 . if the sphere is completely submerged completely , then find the increase in water level in cylindrical vessel
Answer
1
Devhuti
Subject: Maths
, asked on 9/1/18
a corn cob is shaped like a right circular cone , has the radius of its base as 2.1 cm and the length as 20 cm . if each 1 cm
^{2}
of the surface of the cob carries an average of four grains, find the approximate number of grains on the entire cob . assume there are no grains an the base of the cob.
Answer
1
Devhuti
Subject: Maths
, asked on 9/1/18
a conical flask of radius a and height 2a is full of water . if the water is poured into a cylindrical flask of radius 2a/3 , then find the height of water in the cylindrical flask
Answer
1
Devhuti
Subject: Maths
, asked on 9/1/18
a right circular cylinder just encloses a sphere of radius 5 cm . find the
surface area of the sphere
curves surface area of the cylinder.
ratio of areas obtained in (1) and (2)
Answer
1
Devhuti
Subject: Maths
, asked on 9/1/18
a well , whose diameter is 7 m has been dug 22.5 m deep and the soil dug out is used to form embankment 10.5 m wide around it . find the height of the embankment
Answer
1
Devhuti
Subject: Maths
, asked on 9/1/18
it costs rs. 3300 to paint the inner curved surface area of cylindrical vessel 20 m deep . if the cost of painting is at the rate of rs. 30 per m
^{2}
, then find the
inner curved surface area
radius of the base
capacity of the vessel
Answer
1
Devhuti
Subject: Maths
, asked on 9/1/18
a heap of wheat is in the form of cone whose diameter is 10.5 m and the height is 3 m . find its volume . the heap is to be covered by canvas to protect it from rain . find the area of the canvas required
Answer
1
Devhuti
Subject: Maths
, asked on 9/1/18
if the radius of a sphere is increased by p%, then find the percentage increase in its surface area
Answer
3
Prev
5
6
7
8
9
Next
What are you looking for?

A) 1/12

B) 1/16

C) 15/16

D) 11/12

A) d² (1-π)B) d² (4-π)

C) d²/4 - πd²/4

D) d² - πd²/4

^{2}of the surface of the cob carries an average of four grains, find the approximate number of grains on the entire cob . assume there are no grains an the base of the cob.^{2}, then find the