Question

what is the area of a circle whose circumference is 88cm

Answer 1

Answer:

Step-by-step explanation:

Given Circumference of a circle is 88cm.

So,

Circumference of a circle = 2× pi ×radius

88 = 2 × 22/7 × r

Transposing 2 and 22/7 to L.H.S that is changing ×2 to ÷2 and 22/7 to 7/22

88 ÷ 2 × 7/22 = r

14 cm = radius

Area of a circle = pi × radius^2

22/7 × 14^2

22/7 × 196

22 × 28

616 cm^2

Answer 2

HeY MatE !!
HerE IS YouR AnsweR ———

Given : circumference of circle = 88 cm

let the radius be r

now , circumference of circle = 88 cm

$= > 2\pi \: r = 88 \\ \\ = > 2 \times \frac{22}{7} \times r = 88 \\ \\ = > r = \frac{88 \times 7}{22 \times 2} \\ \\ = > r = 14 \: cm$

Now, we have the radius of circle , so, we can find the area of the circle.

therefore,
area of circle = π r²

$= \frac{22}{7} \times 14 \times 14 \\ \\ = 616 \: {cm}^{2}$

therefore , the area of circle is 616 cm².

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