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10.
Circumference of the circular sheet = 132 cm
Formula used for finding
circumference of a circle = 2πr
Let us assume the radius of the circle as r.
Solving,
=> 2 * 22/7 * r = 132 (Taking value of pie as 22/7)
=> 44/7r = 132
=> 44r = 132 * 7
=> 44r 924
=> r = 924/44
=>r = 21
Therefore, Radius of the circle is 21 cm.
Now we have to find the area,
Formula for finding the area of = π p2
Area of the circular sheet = 22/7 * 21 * 21
= 1386 cm²
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