Question

The radius of a circle is 2.9 in. Find the circumference to the nearest tenth.

Answer 1

`\bf \large 20 \: inches`

Explanation:

Given that :

• The radius of a circle is 2.9 in.

to find :

• Find the circumference to the nearest tenth.

formulas used :

• circumference = 2 × π × r

where,

• π = 22/7
• r = 2•9 inches

explanation :

⟼ c = 2πr

⟼ c = 2 × 22/7 × 2•9 inches

⟼ c = 2 × 3•14 × 2•9 inches

⟼ c = 6•28 × 2•9 inches

⟼ c = 18•21 inches.

Round to the nearest tenth :

⟼ c = 18•21 inches

⟼ c = 20 inches

∴ circle circumference is 20 inches .