The Radius
Find the area of a circle that has a radius of 2
12.6
Find the area of a circle that has a radius of 2.5
19.6
Find the area of a circle that has a diameter of 7
38.5
Find the area of a circle that has a radius of 4
50.3 !!!
Find the area of a circle that has a radius of 4.2
55.4
Find the area of a circle that has a diameter of 4.5
15.9
Find the area of a circle that has a radius of 5
78.5
Find the area of a circle that has a radius of 5.3
88.2
Find the area of a circle that has a diameter of 10
78.53
Find the area of a circle that has a radius of 9
254.5
Find the area of a circle that has a radius of 9.9
307.9
Find the area of a circle that has a diameter of 17
227
Find the area of a circle that has a radius of 12
452.4
Find the area of a circle that has a radius of 12.6
498.8
Find the area of a circle that has a diameter of 15
176.7