Question

What is the area of a circle whose diameter is 10?

Answer 1

Step-by-step explanation:

area of a circle is given by;

$\pi \: {r}^{2}$

here diameter is 10 so

$radius = \frac{diameter}{2}$

then radius is 10/2

$= 5$

then area is

$\pi {5 }^{2} \\ = 3.14 \times 25 \\ = 78.5$