Question

The circumference of a circle is 7π in. Find its radius, in inches.

Answer 1

`\bf \huge \: 11 \: inches.`

Explanation:

Given :

• The circumference of a circle is 7π in.

to find :

• Find its radius, in inches.

formula used :

• r = c/2

where,

• r = radius
• c = circumference

explanation :

⟼ r = c/2

⟼ r = 7×22÷7/2 in

⟼ r = 22/2 in

⟼ r = 11 in.

• Hence, radius is 11 inches.

Answer 2

3.5 in

Explanation:

Circumference = 2π(radius)

7π = 2π (radius)

7π/2π = radius

Pi in numerator and denominator cancel each other.

7/2 = radius

3.2 in = radius