Question

the area of a circular rose garden is 22 square meters. what is the radius of the garden? o_O
thats all it gives me i dont get it

Answer 1

well the formula for the area of a circle is

\[A = \pi r^2\]

and you know A = 22 and pi is a number

so

\[22 = \pi r^2\]

the steps are...

1. divide both sides of the equation by pi

2. take the square root to find r.

Answer 2

\[Area _{circle}=\pi r ^{2}\]

What you know;
\[Area _{circle}=22m ^{2}\]
\[\pi \approx3.14\]

What you want to know;
\[r=?\]

Process;
Plug in values.
\[22=3.14r ^{2}\]
Now you need to use the Order of Operations in reverse to get r alone;
\[\frac{ 22 }{ 3.14 }=\frac{ 3.14r ^{2} }{ 3.14 }\]
\[22\div3.14\approx7\]
\[\sqrt{7}=\sqrt{r ^{2}}\]
\[\sqrt{7}\approx2.65\]
\[2.65 = r\]
\[r=2.65m\]