Question Number 22 please.......
Answers
Step-by-step explanation:
Radius of the circle = 40 cm
Angle of the sector = 90°
Area of the sector = Ф/360° * π*r²
= 90°/360° * 3.14 * 40 * 40
= 1/4 * 314 * 4 *4
= 314 * 4
= 1256 cm²
Area of right triangle ABC = 1/2*b*h
= 1/2*40*20
= 40*20
= 800 cm²
∴ Area of shaded region = Area of sector - Area of right triangle ABC
= 1256 - 800
= 456 cm²
Answer:
456cm^2 is the correct answer........
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