Question

Area whose radius is 7cm and angle at center is 90 degree

Answer 1

×Solution×

To find:

area of sector whose radius is 7cm &

angle 90°

solution :

area of circle =r²

=22/7 *7cm *7cm

= 154 cm²

area of sector

= (Area of circle/360°)*area of sector

= (154cm²/3609)* 90° =

= 38.5cm²