Question

A circle's circumference is approximately 88 cm. Estimate the diameter, rounding to the nearest WHOLE number. (don't forget your units and use 3.14 if you need to use )

Answer 1

diameter = 28 cm

Explanation:

circumference = 2πr

88 cm = 2 * 3.14.*r. ( π = 3.14 )

r = ( 88)/(3.14*2)

r = 14 cm

diameter = 2 * radius

diameter = 2 * 14 cm

diameter = 28 cm

Answer 2

• 28 cm

Explanation:

Circumference formula:

• C = πd

Substitute values of circumference and the π to find the diameter:

• d = C/π
• d = 88/3.14 = 28 cm (rounded)