By reducing the circumference of a circle by 50 percent, by what percentage will its area decrease?

Rahul purchased 20 dozens of toys at the rate of Rs. 375 per dozen. He sold each one of them at the rate of Rs. 33. What was his percentage profit?

O is the incentre of ∆ABC and ∠A = 30° then ∠BOC is

If the difference between 2 years compound interest and simple interest at the rate of 5 percent of an amount is Rs. 25, then that amount will be?

What will be the compound interest of 3 years at the rate of 5 % of 1000 rupees?

If the area of a triangle is 616 square cm, then its perimeter will be-

The graph of the equation 4x - 5y = 20 intersects the X-axis at the point.

What is the measure of the circum radius of a triangle whose sides are 9cm, 40cm and 41cm?