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.Management Sciences
Category: Volumes
The area of a base of a cone is 30 cm2. If the height of the cone is 6cm, find its volume?
A. 120 cm3
B. 40 cm3
C. 50 cm3
D. 60 cm3
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The surface area of a cube is 726m2, its volume is?
A. 1300 m3
B. 1331 m3
C. 1452 m3
D. 1542 m3
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If the sides of a cube are in the ratio 4:3. What is the ratio of their diagonals?
A. 4:3
B. 16:9
C. 64:27
D. 3:4
A metal sheet 27 cm long 8cm broad and 1 cm thick is melted into a cube. The difference between the surface areas of two solids is__________?
A. 284 cm2
B. 286 cm2
C. 296 cm2
D. 300 cm2
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A river 2m deep and 45 m wide is flowing at the rate of 3 kmph the amount of water that runs into the sea per minute is?
A. 4500 M3
B. 27000 M3
C. 3000 M3
D. 2700 M3
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The curved surface of a sphere is 64 π cm2. Find its radius?
A. 1 cm
B. 2 cm
C. 4 cm
D. 3 cm
Surface area of a sphere is 2464 cm2. If its radius is doubled, then the surface area of _________?the new sphere will be
A. 4920 cm2
B. 4727 cm2
C. 9856 cm2
D. 19712 cm2
The dimensions of an open box are 52, 40 and 29 cms. Its thickness is 2 cms. If 1 cm3 of metal used in the box weighs 0.5 gms, the weight of the box is________?
A. 8.56 kg
B. 7.76 kg
C. 7.756 kg
D. 6.832 kg
The radius of a cylindrical vessel is 7cm and height is 3cm. Find the whole surface of the cylinder?
A. 308 sq cm
B. 220 sq cm
C. 440 sq cm
D. 132 sq cm
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The ratio between the radii of two spheres is 1:3. Find the ratio between their volumes?
A. 27:1
B. 1:27
C. 1:9
D. 9:1
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