The area of the cardboard(in cm²) needed to make a box of size 25 cm * 15 cm * 8 cm will be__________?

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The volume of a cube is 1728 cc. Find its surface.

A. 864 cm2 B. 648 cm2 C. 486 cm2 D. 468 cm2...

If a solid sphere of radius 10 cms is moulded into 8 spherical solid balls of equal radius, then surface area of each ball (in cm²) is________?

A. 100π B. 7π C. 60π D. 50π...

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...

A tank 3 m long, 2 m wide and 1.5 m deep is dug in a field 20 m long and 14 m wide. If the earth dug out is evenly spread out over the field, the level of the field will raise by nearly?

A. 0.299 cm B. 0.29 cm C. 2.98 cm D. 4.15 cm...

The height of two right circular cones are in the ratio 1:2 and their perimeters of their bases are in the ratio 3:4, the ratio of their volume is_________?

A. 3:8 B. 9:16 C. 9:32 D. 9:64...