Question

Find the radius of the circle that has an area of 2.4 cm² no picture

Answer 1

In this case, we'll have to carry out several steps to find the solution.

Step 01:

data:

circle:

area = 2.4 cm²

Step 02:

geometry:

area of a circle:

A = πr²

radius:

`\begin{gathered} 2.4\text{ cm}^2=\pi r^2 \\ \\ \frac{2.4\text{ cm}^2}{\pi}=r^2 \\ \\ \sqrt{\frac{2.4\text{ cm}^2}{\pi}}=r \\ \\ 0.87\text{ cm = r } \end{gathered}`

The answer is:

r = 0.87 cm