Question

For the water passage of of an object,
7 cm $\times$ 6 cm $\times$ 10 cm is drilled out from
4 cm $\times$ 6 cm $\times$ 3 cm.
What is the volume of the remaining solid?

• A. 348 cubic cm
• B. 290 cubic cm
• C. 490 cubic cm
• D. 590 cubic cm

Answer 1

The correct option is A 348 cubic cm

Remaining volume = Volume of the object - Volume of the hole drilled



Volume of cuboid
= Length $\times$ Width $\times$ Height

Volume of the object
= 7 $\times$ 6 $\times$ 10
= 420 cubic cm

Volume of the cuboidial hole
= 4 $\times$ 6 $\times$ 3
= 72 cubic cm

Remaining volume = 420 - 72
= 348 cubic cm