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Devhuti
Subject: Maths
, asked on 9/1/18
find the depth of the cylindrical tank of radius 10.5 m , if its capacity is equal to that of a rectangular tank of size 15m * 11m * 10.5m
Answer
1
Devhuti
Subject: Maths
, asked on 9/1/18
the height and the radius of a cylinder are in the ratio of 10 : 7 . if the volume of the cylinder is 41580cm
^{2}
. find its height
Answer
1
Devhuti
Subject: Maths
, asked on 9/1/18
the ratio of the total surface area and the curved surface area of a cylinder is in the ratio of 5:3
Answer
1
Anjali
Subject: Maths
, asked on 9/1/18
$16.Theheightofaconeis30cm.Asmallconeiscutoffatthetopbyaplane\phantom{\rule{0ex}{0ex}}paralleltothebase.Ifitsvolumebe\frac{1}{27}ofthevolumeofthegivencone,\phantom{\rule{0ex}{0ex}}atwhatheightabovethebase,thesectionhasbeenmade?\phantom{\rule{0ex}{0ex}}\phantom{\rule{0ex}{0ex}}17.Fromasolidrightcircularcylinderwithheight10cmandradiusofthe\phantom{\rule{0ex}{0ex}}base6cm,arightcircularconeofthesameheightandbaseisremoved.\phantom{\rule{0ex}{0ex}}Findthevolumeoftheremainingsolid.\left(Take\mathrm{\pi}=3.14\right)$
Answer
1
Anjali
Subject: Maths
, asked on 9/1/18
Pls tell the solutions by doing the complete working of Q 14,16,17,18,15
Q14. A cylinder and a cone have equal radii of their bases and equal heights. If their curved surface areas are in the ratio 8:5, show that the radius and height of each has the ratio 3 : 4.
Q15. An iron pillar consists of a cylindrical portion 2.8 m high and 20 cm in diameter and a cone 42 cm high is surmounting it. Find the weight of the pillar, given that 1 cm
^{3}
of iron weighs 7.5 g.
Q16. The height of a cone is 30 cm. A small cone is cut off at the top by a plane parallel to the base. If its volume be
$\frac{1}{27}$
of the volume of the given cone, at what height above the base, the section has been made?
Q17. From a solid right circular cylinder with height 10 cm and radius of the base 6 cm, a right circular cone of the same height and base is removed. Find the volume of the remaining solid. ( Take
$\mathrm{\pi}$
= 3.14.)
Q18. Water flows at the rate of 10 metres per minute through a cylindrical pipe 5 mm in diameter. How long would it take to fill a conical vessel whose diameter at the surface 40 cm and depth 24 cm?
Answer
3
Yakini Jain
Subject: Maths
, asked on 4/1/18
Determine the volume of a colonial vessel having radius of the base as 5cm and its slant height as 13cm. (Use pie= 3.14)
Answer
2
Harsh Gujrani
Subject: Maths
, asked on 4/1/18
Q29and30
Answer
1
Harsh Gujrani
Subject: Maths
, asked on 4/1/18
Q21
Answer
1
Ayushi Singhal
Subject: Maths
, asked on 4/1/18
Please solve these questions
Answer
1
Arham Jain
Subject: Maths
, asked on 3/1/18
Why we are finding length of sheet ? plz tell fast
Answer
2
Manan Vats
Subject: Maths
, asked on 1/1/18
What is the volume of the right circular cylinder whose base area is 606cm square and whose height is 2m ?
Answer
2
Sushmit Chakraborty
Subject: Maths
, asked on 30/12/17
19. The radius and height of a cylinder are in the ratio 2:3. If the volume of a cylinder
is 1617cm3. Find its radius and height .
Answer
4
Sushmit Chakraborty
Subject: Maths
, asked on 30/12/17
18. Find the length of the longest pole that can be put in a room of dimensions 6m x
6m x 3m.
Answer
2
Sushmit Chakraborty
Subject: Maths
, asked on 30/12/17
14. The radius of a solid hemisphere is 2r, then find its total surface area.
Answer
3
Sushmit Chakraborty
Subject: Maths
, asked on 30/12/17
10. A wooden toy is in the form of a cone. The diameter of the base of the cone is 6
cm and the height of the cone is 4 cm. Find the cost of painting the toy at the rate
of Rs. 5 per 100 cm2 .
Answer
1
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^{2}. find its heightQ14. A cylinder and a cone have equal radii of their bases and equal heights. If their curved surface areas are in the ratio 8:5, show that the radius and height of each has the ratio 3 : 4.

Q15. An iron pillar consists of a cylindrical portion 2.8 m high and 20 cm in diameter and a cone 42 cm high is surmounting it. Find the weight of the pillar, given that 1 cm

^{3}of iron weighs 7.5 g.Q16. The height of a cone is 30 cm. A small cone is cut off at the top by a plane parallel to the base. If its volume be $\frac{1}{27}$ of the volume of the given cone, at what height above the base, the section has been made?

Q17. From a solid right circular cylinder with height 10 cm and radius of the base 6 cm, a right circular cone of the same height and base is removed. Find the volume of the remaining solid. ( Take $\mathrm{\pi}$= 3.14.)

Q18. Water flows at the rate of 10 metres per minute through a cylindrical pipe 5 mm in diameter. How long would it take to fill a conical vessel whose diameter at the surface 40 cm and depth 24 cm?

is 1617cm3. Find its radius and height .

6m x 3m.

cm and the height of the cone is 4 cm. Find the cost of painting the toy at the rate

of Rs. 5 per 100 cm2 .