Question

A road that is 7m wide surrounds a circular park whose circumference is 352m. Then the area of the road is

Answer 1

I just need a hint on solving the problem

Answer 2

@CGGURUMANJUNATH

Answer 3

You want the area of a RING (which represents the circular road around the park). The area of this RING is equal to the area of a larger circle LESS the area of a smaller circle.

Now we have to do some detective work. If the circumference of the park is 352m, and the formula for the circumference of a circle of radius r is \[C=2\pi r\], then what is the radius of the park (which is also the inside radius of the road)?

The outside radius of the park is \[r _{i}+7m\] where r-sub-i is the inside radius.

Why not draw a picture of the park and of the road that encircles the park?
Label the inside radius of the road and the outside radius of the road.

Answer 4

is the road circular too