Basic Math Examples



\begin{array}{r} r = & 15 \end{array}

$\begin{array}{r} r = & 15 \end{array}$

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 = 15

$r = 15$ into the formula for the area of a circle. Pi

π

$π$ is approximately equal to

3.14

$3.14$ .

π \cdot 15^{2}

$π \cdot 15^{2}$

Step 3

Raise

15

$15$ to the power of

2

$2$ .

π \cdot 225

$π \cdot 225$

Step 4

Move

225

$225$ to the left of

π

$π$ .

225 π

$225 π$

Step 5

The result can be shown in multiple forms.

Exact Form:

225 π

$225 π$

Decimal Form:

706.85834705 \dots

$706.85834705 \dots$