Question

Find the area of the circumference is 154 m ( Take radius =22/7)

Answer 1

Answer:

Circumference = 154

✔ 2πr = 154

✔ 2 × 22/7 × r = 154

$r = \frac{154 \times 7}{2 \times 22} \\ \: \: \: \: = \frac{7 \times 7}{2} \\ \: \: \: \: = \frac{49}{2}$

Therefore, radius = 49/2 m

Now,

Area = πr^2

= 22/7 × 49/2 × 49/2

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$area = \frac{22}{7} \times \frac{49}{2} \times \frac{49}{2} \\ \: \: \: \: \: \: \: \: \: \: = \frac{11 \times 7 \times 49}{2} \\ \: \: \: \: \: \: \: \: \: \: = \frac{3773}{2} \\ \: \: \: \: \: \: \: \: \: \: = 1886.2$

Therefore, Area = 1886.2 m^2

Hope it helps.... ❤