Question

the area of a circle of diameter d is​

Answer 1

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

Answer 2

Step-by-step explanation:

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

2r ⇒ r = d/2

so, Area of a circle = πr² = π (d/2)² = πd²/4