Circles Mixed Exercises

Circumference = Π×diameter = 10 Π

radius = diameter ÷ 2 = 10 ÷ 2 = 5

Area = Π(radius)² = Π(5)² = 25Π

A = Π (radius)² = 16Π radius² = 16 radius = 4

Circumference = 2Π × radius = 2Π × 4 = 8Π

Circumference = 2Π(radius) = 26Π 2 × radius = 26 radius = 13

Area = Π(radius)² = Π(13)² = 169Π