Question

a.Find the area and circumference of the circle whose diameter is 7km ?​

Answer 1

Answer:

Given diameter = 7 km

Therefore radius, r = d/2 = 7/2 = 3.5

We know that area of circle = πr^2 A = (22/7) × (3.5)2 A

= 38.5 km^2

Step-by-step explanation:

Circumference =  2πR

=  7π

=  21.991148575129