Aptitude - Volume and Surface Area

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Question 1

A cubical rectangular bar has the dimensions with the ratio 5 : 4 : 3. Its volume is 7500. What is the surface area of the bar?

Question 2

what is the radius of the circular plate of thickness 1cm made by melting a sphere of radius 3cm?

Question 3

If the perimeter and the diagonal of a rectangle is 18 cm and √41 cm respectively. Calculate the area of the rectangle?

Question 4

Find the volume, surface area and the length of daignol of a cuboid 12m long, 9m broad, 8m high?

Question 5

The daignol of a cube is 4√3 . Find volume and surface area.

Question 6

A wall is 8m long, 6m high and 22.5 cm thick is made up of bricks each measuring 25cm * 11.25cm * 6cm . Find the number of bricks required to bulid the wall.

Question 7

Find the volume and surface area of sphere of daimeter 42cm.

Question 8

Find the volume, curved surface area and total surface area of a hemisphere of radius 21 cm.

Question 9

A copper sphere of daimeter 18 cm is drawn into a wire of daimeter 4mm. Find the length of the wire.

Question 10

A cone is 8.4cm high and radius of the base is 2.1cm. It is melted and recasted into a sphere. Find the radius of the sphere.

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