Question

The area of a circular pond is 22
.It is surrounded by a circular path 0.5m wide.
Find:

(i) the radius of the pond
(ii) the circumference of the pond
(iii) the area of the path ​

Answer 1

Step-by-step explanation:

1. πr^2=22

(22/7)r^2=22

r^2=7

r=√7

radius =√7 unit (please mention the unit)

2. circumference of pound =2πr

=2*22/7*√7= 44/√7 unit

3. area of path=2π(r2^2 - r1^2)

=2*22/7*((0.5+√7)^2 -(√7)^2)

=44/7*(0.25+7+2*0.5*√7-7)

=44/7*(0.25+√7)

=18.2 meter square (approx)