Question

A gardener has to lay grass in a circular ground leaving a space of 5m all around it. If the area of the ground with grass is 59400/21 m square, find the area of the ground without grass. (Use π = 22/7)

Answer 1

Answer:

area of circle = r2

Step-by-step explanation:

therefore,

area of ground with grass = 22/7 * r^2

59400/21 = 22/7 *r^2

r^2 = 59400/21 * 7/22

r^2 = 900

r = 30m

Now , we know we are leaving the space of 5m. So, the radius for the whole ground will be 35m .

Hence ,

area of full ground = 22/7 * 35 * 35

= 3850m^2

Therefore, the area without grass is equal to area of full ground - area of ground with grass.

Rest you can calculate.

Hope this helps