Question

What is the area of a circle with a radius of 18 cm?

Answer 1

Given Data:

The radius of the circle is, r = 18 cm.

The expression for calculating the area of a circle with radius r is given by,

`\begin{gathered} A=\pi* r^2 \\ \pi=3.14 \end{gathered}`

Therefore, substituting the value of r, we get,

`A=3.14*18^2=3.14*324=1017.36`

Thus, the area is 1017.36 cm2.

The square of 18 can be calculated as,

`18^2=18*18=324`