Question

Find the area the sector

Answer 1

A= 706.85m^2

Explanation:

A= 4• Pi•r^2

= 4•Pi•15^2

=2827.43/4

=706.8575m^2

Answer 2

For this case we have that by definition, the area of a circular sector is given by:

`A = \frac {a * r ^ 2} {2}`

Where:

r: It's the radio

a: It is the angle of the sector

We have to:

a = 90 degrees

`90\ degrees = \frac {\pi} {2}`

Then, replacing:

`A = \frac {\frac {\pi} {2} * 15 ^ 2} {2} = \frac {225 \pi} {4}`

Answer:

Option A