Question

find the area of the circle whose radius is 2.1cm.
Please help me​

Answer 1

$\pi \times {r}^{2} \\ \frac{22}{7} \times {2.1}^{2} \\ \frac{22}{7} \times 4.41 \\ = 13.86cm$

Answer 2

Given :- radius (r) = 2.1 cm

Therefore ,

Area of the circle = πr²

=>

$\: \: \: \: 22 \div 7 \times 2.1 \times 2.1 \\ = 22 \times 0.3 \times 2.1 \\ = 6.6 \times 2.1 \\ = 13.86 \: \: {cm}^{2}$

Hope it's done

The value of π is 3.14 or 22/7

Here it is 22/7

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Hope u got the ans

:-)

$<marquee>Answer :-$Hope it helps !! ☺️

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