Respuesta :

Answer:63.6 units

Step-by-step explanation:

Theta=90°

Radius =9

area of sector=(theta)/360 x π x r x r

area of sector=90/360 x 3.14 x 9 x 9

area of sector=(90x3.14x9x9)➗360

area of sector=22890.6 ➗ 360

area of sector=63.535

area of sector=63.6 approximately

Answer:

It's 63.62

Step-by-step explanation: