Basic Math Examples



\begin{array}{r} r = & 13.2 \end{array}

$\begin{array}{r} r = & 13.2 \end{array}$

Step 1

The area of a circle is equal to Pi

π

$π$ times the radius

r

$r$ squared.

π \cdot {(r a d i u s)}^{2}

$π \cdot {(r a d i u s)}^{2}$

Step 2

Substitute in the value of the radius

r = 13.2

$r = 13.2$ into the formula for the area of a circle. Pi

π

$π$ is approximately equal to

3.14

$3.14$ .

π \cdot {13.2}^{2}

$π \cdot {13.2}^{2}$

Step 3

Raise

13.2

$13.2$ to the power of

2

$2$ .

π \cdot 174.24

$π \cdot 174.24$

Step 4

Multiply

π

$π$ by

174.24

$174.24$ .

547.39110396

$547.39110396$