Question

The diameter of the larger circle is 10.5 cm. The diameter of the smaller circle is 4.5 cm. What is the approximate area

Answer 1

Sorry if I am late, but I will help you....
So the area of a circle is pi times radius^2
Lets find the the area of the bigger circle
First divide 10.5 by 2 to find the radius which is 5.25
Now do pi times 5.25^2 which will give you approximately 86.55
Now for the smaller circle
Divide 4.5 by and get 2.25
pi times 2.25^2 will equal approximately 15.9

So the big circle has an area of 86.55
The smaller scircle has area 15.9
YOu can figure out the rest hopefully :)