Question

find the area of a sector of a circle with perimeter 22cm

Answer 1

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Answer 2

Answer:

the perimeter of a circle =2×22/7×r

22×7/2×22=r

7/2=r

3.5=r

the area of a circle =22/7×r×r

=22/7×3.5×3.5

=38.5 cm