Question

A circle has a circumference of 3.14

What is the diameter of the circle?

Answer 1

• Diameter be d

`\\ \tt\hookrightarrow \pi d=3.14`

• Put value of π

`\\ \tt\hookrightarrow 3.14d=3.14`

`\\ \tt\hookrightarrow d=1`

Answer 2

Note that:

• C = 3.14 units = 2πr

Simplify the equation to find the radius. Then double the radius to obtain your diameter.

• 3.14 units = 2πr = π
• => 2πr = π
• => 2r = 1
• => r = 1/2
• => dia. = 1/2 x 2
• => dia. = 1 unit

The diameter of the circle is 1 unit.