Question

(1) Find the circumference of a circle whose area is 1386 cm.
(A) 132 cm (B) 132 cm (C) 42 cm (D) 21 cm
The​

Answer 1

Answer:

area of circle = 2πr×r

1386= 2×22÷7×r×r

1386×7÷22×2=r×r

441=r×r

21=r

d)21

Answer 2

Answer:

132cm and 88cm 120cm and 288cm