+17 1.) The diameter of a circle is 3 cm.
2.) The radius of a circle is 2.5 cm.
3.) The radius of a circle is 6 in.
4.) The diameterof a circle is 10 mm.
5.) The diameter of a circle is 16 in.
6.) The radius of a circle is 4 cm.
+129852 I'll do a couple.......they are all pretty much the same
Area = pi * radius^2
1. The diameter of a circle is 3 cm.
radius = diameter / 2
So radius = 3 cm / 2 = 1.5 cm
Area = pi * (1.5)^2 = 2.25 pi ≈ 7.07 cm^2
2.) The radius of a circle is 2.5 cm.
Area = pi * (2.5)^2 = 6.25 * pi ≈ 19.63 cm^2
