Question

area of a circle having diameter x is​

Answer 1

Answer:

Given, the diameter of the circle is x

We know,

$d = 2r\\r=\frac{d}{2}$

Substituting d = x

We get

$r=\frac{x}{2}$

Therefore area of a circle

$A=\pi r^{2}$

$A=\pi (\frac{x}{2}) ^{2}$

$A=\pi \frac{x^{2} }{4}$

Answer 2

Answer:

The formula for calculating the area of a circle is A = π_r_2 where pi (π) equals 3.14 and the radius (r) is half the diameter.