Question

Find the circumference of a circle if its diameter is 18 cm. (Take π=3.14)

Answer 1

Answer: C = 56.52 cm

Explanation:

Our task is to find the circumference of the circle, given that:

• the diameter is 18 cm

Applying the formula:

`\sf{C=\pi * d}` (C = circumference, d = diameter)

Plug in 18 for d, since it's the diameter; also, don't forget to use 3.14 for pi.

`\sf{C=3.14*18}`

`\sf{C=56.52\:cm}`

Answer 2

C = 56.52 cm

Explanation:

the circumference (C) of a circle is calculated as

C = πd ( d is the diameter ) , then

C = 3.14 × 18 = 56.52 cm