Question

Find the area of circle having diameter ‘d’​

Answer 1

Answer:

11d/7

Step-by-step explanation:

r=d/2

Area=πr²

area=22/7×d/2

=11d/7 Ans.

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Answer 2

Step-by-step explanation:

We know that diameter = 2 × radius i.e. d

$2r = r = \frac{d}{2} \\ also \: are a \: of \: a \: circle \: = \pi \: r {}^{2} = \pi( \frac{d}{2} ) {}^{2 } \\ \frac{\pi \: d}{4}$