Question

The area of a circular plate is 77.5 sq.m .What is the diameter of the plate?

Answer 1

Answer:

10 m

Step-by-step explanation:

area of circular plate = πr^2

77.5=3.14×r^2

77.5/3.1=r^2

25=r^2

+-5m=r

negative sign will be neglected as radius can never be negative.

therefore diameter =2r

d=10m