Question

find area of a circle whose radius is 21 cm​

Answer 1

Area of circle = 22/7 × r^2

= 22/7 × 21 × 21

= 22×3×21

= 1387 cm^2

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Answer 2

Answer:

1386 cm^2

Step-by-step explanation:

Area of a circle with radius 21 cm

= 22/7 × 21 ×21