EASY
Earn 100

A tub is in the shape of a frustum of a cone. The radii of two circular ends of the tub are 105 cm and 42 cm. If the vertical height of the tub is 16 cm, what is its slant height ?

50% studentsanswered this correctly

Important Questions on Geometrical Shapes

EASY
Which of the following solids has least number of faces?
EASY
Find the height of a cube whose volume is 330 cm3 and base area is 15 cm2.
EASY
A metallic sphere of diameter 40 cm is melted into spheres of radius 0.5 cm. How many such small balls can be made?
EASY
The total surface area of a solid cylinder is 1155 cm2.Its curved surface area is two-fifth of its total surface area.What is the height (in cm) of the cylinder?
MEDIUM
A sector of radius 10.5 cm with the central angle 120o, is folded to form a cone by joining the two bounding radii of the sector. What is the volume (in cm3) of the cone so formed?
EASY
The volume of two spheres are in the ratio 64:125. The the ratio of their surface areas is ____.
EASY
The volumes of spheres A and B are in the ratio 125:64. If the sum of radii of A and B is 36 cm, then the surface area in cm2 of A is?
EASY
If the radius of a right circular cone is decreased by 10% and its height is increased by 40%, then by what percent does its volume increase or decrease?
EASY

The curved surface area of a hemisphere with radius 7 cm is: 

(Takeπ=227)

HARD
The circumference of the base of a conical tent is 66 m. If the height of the tent is 36 m, what is the area (in m2) of the canvas used in making the tent? (Take π=227)
EASY
What is the volume (in cm3) of a sphere of diameter 18 cm (correct upto two decimal places)?
MEDIUM
A solid sphere of diameter 17.5 cm is cut into two equal halves. What will be the increase (in cm2) in the total surface area?
EASY
The radius of a right circular cylinder is 7 cm. Its height is twice its radius.What is the curved surface area of the cylinder?
EASY

The edge of a cube is 8 cm .What is the total surface area of the cube?

EASY
The curved surface area of a cylinder is 25344 cm2 and its height is 32 cm. What is the volume of a cylinder whose capacity is π792 times the volume of the given cylinder?
EASY
If the height of a right circular cylinder is 10 cm and the curved surface area is 440 cm2, then what is its radius?
EASY
The total surface area of a cube is 864 cm2. What is its volume (in cm3)?
EASY
If the radius of the right circular cylinder is decreased by 10%, and the height is increased by 20%, then the percentage increase/decrease in its volume is:
MEDIUM
The radius of a sphere is reduced by 40%. By what percent will its volume decrease?
MEDIUM
The respective ratio of the curved surface area to the total surface area of cylinder is 4: 5. If the curved surface area of the cylinder is 1232 cm2, what is its height?( in cm) ?