Question

Maths
chapter mensuration
answer fast plss
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Answer 1

Answer:

Circumference is 7 cm

Step-by-step explanation:

r = 7 cm

= 1/2 π r²

= 1/2 x 22/7 x 7

= 22/2

= 11 cm

Answer 2

Diameter = 14 cm

So, radius will be 7 cm

$area = \frac{1}{2} \pi \: r {}^{2} \\ = \frac{1}{2} \times \pi \times (7) {}^{2} \\ = \frac{1}{2} \times \frac{22}{7} \times 7 \times 7 \\ = 77cm {}^{2}$

and

$circumference = \pi \: r \\ = \frac{22}{7} \times 7 = 22cm$

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