Question

Find the arc length of the partial circle.

Answer 1

10.99

Explanation:

We know it's a quarter of a circle since the angle is
`90`°

Therefore we can calculate like a normal circle and divide by 4.

The formula for calculating the circumference is 2 times pi times the radius or
`2\pi r` .

`\pi=3.14\\2*\pi=6.28\\6.28*7=43.96\\43.96/4=10.99`