Question

Find the arc length of the partial circle.

Answer 1

Answer:

arc = 7.5π units

Step-by-step explanation:

the arc length is calculated as

arc = circumference of circle × fraction of circle

the angle subtended at the centre by the arc is 360° - 90° = 270° , then

arc = 2π × 5 × $\frac{270}{360}$

     = 10π × $\frac{3}{4}$

     = $\frac{30\pi }{4}$

     = 7.5π