Surface Area and Volume

• 10m

• 15m

• 25m

• 20m

• 1166kg

• 1166.2kg

• 1166.4kg

• 1166.5kg

A brick measures 30 cm × 10 cm × 15/2 cm. How many bricks will be required for a wall 30 m long. 2 m high and 3/4 m thick?

• 15,000

• 17,000

• 18,000

• 20,000

• 88 mins

• 88.5 mins

• 88.3 mins

• 88.7 mins

If the heights of two cylinders are in the ratio of 4 : 3 and their radii are in the ratio of 3 : 4 then what is the ratio of their volumes?

• 3:4

• 4:3

• 1:2

• 3:5

If the radius of the base of a solid cone is 'r' and its slant height is 1 then what is its lateral surface area?

• 22/7r

• 22/8r

• 12/6r

• 22/9r

• 22r/21((93+r)/3)

• 22/7r((45+r)/3)

• 227r

• 121r(27+r/3)

If a right circular cone has radius 4 cm and slant height 5 cm then what is its volume?

• 50.10 m³

• 50.13 m³

• 50.16 m³

• 50.20 m³

The radius of a hemisphere is r. What is its volume?

• 2/3πr³

• 4/3πr³

• 2/7πr³

• 1/3πr³

If the radius of a sphere is doubled then what is the ratio of their volumes?

• 1:2

• 2:1

• 1:3

• 1:5