Answer: The first circle is 78.5 in squared and the circumference is 10 inches. The second circle is 254.5 km squared and the circumference is 18 km.
Explanation:
the area for a circle = πr²
the circumference of a circle = 2r
First circle:
π5²
5*5=25
25pi inches squared
25pi= 78.53
= 78.5 inches squared
the circumference is already given (10 inches)
second circle:
π9²km
81π km²
81π=254.46 km²
=254.5 km²