Question

The diameter of two circles are 4 cm and 6 cm respectively . find the ratio of their areas

Answer 1

Step-by-step explanation:

the area of a circle is = πr²

diameter =2r (r is radius )

r1 =6/2=3

r2=4/2=2

so the ratios will be

= area of circle of bigger radius ÷  area of circle of smaller radius

π x 3 x 3 / π x 2 x 2= 6/4 ( can also be written as 6:4)