Question

The circumference of a circle is 22cm. Find its area?

Answer 1

Answer:

$circumference = 2\pi \: r \\ 22 = 2 \times \frac{22}{7} \times r \\ r = \frac{7}{2} cm \\ \\ area \: = \pi {r}^{2} \\ = \frac{22}{7} \times \frac{7}{2} \times \frac{7}{2} \\ = 38.5cm {}^{2}$

Answer 2

Answer:

circumference=2πr

22=2×

7

22

×r

r=

2

7

cm

area=πr

2

=

7

22

×

2

7

×

2

7

=38.5cm

2

Step-by-step explanation:

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