Question

Find the area of the sector. Leave your answer in terms of pi.

547km²
361 km²
6
27 km²
66 km²
135°
12 km

Answer 1

A = 54π Km²

Explanation:

the area (A) of the sector is calculated as

A = area of circle × fraction of circle

= πr² ×
`(135)/(360)` ( r is the radius )

= π × 12² ×
`(3)/(8)`

= 144π ×
`(3)/(8)` ( cancel 144 and 8 by 8 )

= 18π × 3

= 54π Km²