Find the area of a circle whose cercumferance is 22cm
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Answered by
1
Answer:
cercumferance = 22cm
2πr = 22
r= 11/π
area of circle = πr²
= π×11/π×11/π
= 121/π
= 121÷22/7
= 77/2
= 38.5 cm²
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Answered by
2
Answer:
Ur answer is 38.5cm2
Step-by-step explanation:
Let r be the radius of the circle, then circumference = 2πr
⇒ 2πr = 22 cm
⇒ r = 22/2π = 22 × 7/2 × 22 = 7/2 cm
∴ Area of circle = πr2
= 22/7 × 7/2 × 7/2 cm2 = 77/2 cm2
= 38.5 cm2
Hope it helps uh.....
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