Basic Math Examples



\begin{matrix} r = & 45 \end{matrix}

$\begin{array}{r} r = & 45 \end{array}$

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 = 45

$r = 45$ into the formula for the area of a circle. Pi

π

$π$ is approximately equal to

3.14

$3.14$ .

π \cdot 45^{2}

$π \cdot 45^{2}$

Step 3

Raise

45

$45$ to the power of

2

$2$ .

π \cdot 2025

$π \cdot 2025$

Step 4

Move

2025

$2025$ to the left of

π

$π$ .

2025 π

$2025 π$

Step 5

The result can be shown in multiple forms.

Exact Form:

2025 π

$2025 π$

Decimal Form:

6361.72512351 \dots

$6361.72512351 \dots$