The length, width and height of a rectangular tank are 7 meters, 6 meters and 5 meters respectively, what will be the volume (cubic metre)  of this tank?

If the volume of two cubes are in the ratio of 343: 512, then what is the ratio of their total surface area?

A tank is 25m long 12m wide and 6m deep. The cost of plastering its walls and bottom at 225 paise per sq m is

if one of the interior angles of a regular polygon is $$15\over 16$$ times of one of the interior angles of a regular decagon, then the number of diagonal of the polygon is.

A pipe of diameter d can drain a certain water tank in 40 minutes. The time taken by a pipe of diameter 2d for doing the same job in: 

The total surface area of a hemisphere is 166.23 sq cm, find its radius?

The radius of a circular field is equal to the side of a square field whose perimeter is 784 feet. What is the area o the circular field?