Question

find the circumference and the area of a circle with diameter 42 cm

Answer 1

$\huge\red{Answer\: is}$

Diameter of circle = 42 cm

Radius = D/5 =42/2 =21 cm

Circumference =
$= 2\pi \times r \\ = 2 \times \frac{22}{7} \times 21 \\ = 132 \: cm$
Now Area of circle =
$= \pi \times r {}^{2} \\ = \frac{22}{7} \times (21) {}^{2} \\ = \frac{22}{7} \times 21 \times 21 \\ = 1386 \: cm {}^{2}$
$<marquee>Hope it helps you$

Answer 2

Answer is:

hope helps u

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