Question

tell me the answer of this question​

Answer 1

Answer:

option 2

378cm²

Hope it helps you!!

Answer 2

side of a square=2 times of radius of circle

side of square=2×21

side of square=42

area of square=S^2

42×42=1764

area of Square=1764cm^2

area of sector=πr^2×tita÷360

now

area of sector=22÷7×21×21×90÷360=346.5

area of square -4(area of sector)

1764-4×346.5=1764-1386=378cm^2

the answer is option 2