Question

Need help on precalculus

Answer 1

arc = 15π

Explanation:

The arc is calculated as

arc = circumference of circle × fraction of circle

= 2πr ×
`(225)/(360)` ( r is the radius )

given diameter = 24 then r = 24 ÷ 2 = 12

arc = 2π × 12 ×
`(5)/(8)`

= 24π ×
`(5)/(8)`

= 3π × 5

= 15π