Question

Find the area of sector whose radius is 7cm with angle 60°,30°,72°,90°

Answer 1

Answer:

i)angle = 60°

Area = r²theta/2 = 49*60/2 = 1470cm²

ii) angle = 30°

Area = 49*30/2 = 735cm²

iii) angle = 72°

area = 49*36 = 1764cm²

iv) angle = 90°

area = 49*45 = 2205cm²