Volume and Surface Area – HI MCQ!

How many cubes of 3cm edge can be cut out of a cube of 18cm edge?

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A large cube is formed from the material obtained by melting three smaller cubes of 3, 4 and 5 cm side. What is the ratio of the total surface areas of the smaller cubes and the large cube?

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If each edge of a cube is increased by 50%, find the percentage increase in Its surface area?

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If radius and height of a cylinder increase by 20% and15% respectively. then what is the % change in curved surface area?

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A tank is 25 m long, 12 m wide and 6 m deep. The cost of plastering its walls and bottom at 75 paise per sq. m, is?

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If the radius of base and height of a cone are increased by 10%, find the percentage of increase of its volume?

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The height of the wall is 6 times its width and lenght of the wall is 7 times its height .if the volume of the wall be 16128 cu.m.its width is?

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What is the total surface area of a right circular cone of height 14 cm and base radius 7 cm?

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Find the length of the longest pole that can be placed in a room 12 m long 8m broad and 9m high?

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Three solid cubes of sides 1 cm, 6 cm and 8 cm are melted to form a new cube. Find the surface area of the cube so formed?

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