Find the cost of digging a cuboidal pit 8 m long, 6 m broad and 3 m deep at the rate of Rs. 30 per m³.

A cuboidal water tank is 6 m long, 5 m wide and 4.5 m deep. How many litres of water can it hold?

A cubical vessel is 10 m long and 8 m wide. How high must it be made to hold 380 cubic metres of a liquid?

If V is the volumw of cuboid of dimensions a,b,c and S is its surface area, then prove that

The areas of three adjacent faces of a cuboid are x, y, and z. If the volumes is V, prove that V² = xyz.