skamal7 wrote:
Here dont we need to find the circumference of the circle..Why we need to calculate the area?pls clarify?
Two circular road signs are to be painted yellow. If the radius of the larger sign is twice that of the smaller sign, how many times more paint is needed to paint the larger sign (assuming that a given amount of paint covers the same area on both signs)
How many times more paint need means to cover the entire area, thus we just need to know area.