Radius of a circle is 5 inches. What is (a)diameter (b)circumference ?

(a) The diameter of a circle is twice the radius, so the diameter of a circle with a radius of 5 inches is 10 inches.

(b) The circumference of a circle can be calculated using the formula C = 2πr, where r is the radius. Substituting the radius of 5 inches into the formula, we get C = 2π(5) = 10π ≈ 31.42 inches.

(a) Diameter = 2 x Radius = 2 x 5 inches = 10 inches

(b) Circumference = 2 x π x Radius = 2 x 3.14 x 5 inches = 31.4 inches