measuring
the total area enclosed.
A road 10 m wide surrounds a circular park whose perimeter is 352 m. Find the area of
the road.
A wire is in a circular shape of radius 49 cm. It is bent into the shane of a square
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Explanation:
⇒ =352
∴ 2π=352
⇒ 2×
7
22
×=325
⇒ =
2×22
352×7
=56
∴ =56
⇒ =π
2
⇒ =
7
22
×56×56=9856
2
⇒ =7 []
∴ =π(+)
2
⇒ =
7
22
×(56+7)
2
2
⇒ =
7
22
×63×63=12474
2
⇒ = -
⇒ =12474
2
−9856
2
=2618
2
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