If the radius of a circle is diminished by 10%, then the area is diminished by:

200%

210%

300%

310%

Correct Answer : C

How many pieces of 0.85 meteres can be cut from a rod 42.5 meteres long

If the circumference of a circle increases from 4pi to 8 pi, what change occurs in the area ?

Find the compound interest on Rs. 7500 at 4% per annum for 2 years, compounded annually.