Question

A circular ground has diameter 112 m a 7 m road runs around the park find the area of the road

Answer 1

Answer:

answer is 1413.78m2

Step-by-step explanation:

formula for calculating the area of a circle is  (pi* r^{2}) . in this question we have diameter of a park which is 112 m.

1st we will find the radius of park which will be : diameter /2  

so the radius will be 112/2 = 66

1st we will calculate the area of outer circle with radius of 66 and the answer is 13684.78.

now we will calculate the radius of inner circle by eliminating the road width form outer circle . so the radius of inner circle will be ( 112-7)/2 = 62.5

now we will calculate the area using 62.5 m radius. which is 12271.

after this we will minus the area of inner circle form the outer circle . which will give us  the value of road area. and that is 1413.78 m2