Question

area of circle of diameter 2r cm is​

Answer 1

Answer:

Circle

Solve for area

A=πr2

r Radius

Answer 2

Answer:

Area is $\pi r^2$

Step-by-step explanation:

Given, diameter of the circle $d= 2r$

Thus area $=\frac{\pi}{4}d^2=\frac{\pi}{4}(2r)^2=\frac{\pi}{4}(4r^2)=\pi r^2$