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Find the Area circle (90)

 $\begin{array}{r} r = & 90 \end{array}$

Step 1

The area of a circle is equal to Pi $π$ times the radius $r$ squared.

$π \cdot {(r a d i u s)}^{2}$

Step 2

Substitute in the value of the radius $r = 90$ into the formula for the area of a circle. Pi $π$ is approximately equal to $3.14$ .

$π \cdot 90^{2}$

Step 3

Raise $90$ to the power of $2$ .

$π \cdot 8100$

Step 4

Move $8100$ to the left of $π$ .

$8100 π$

Step 5

The result can be shown in multiple forms.

Exact Form:

$8100 π$

Decimal Form:

$25446.90049407 \dots$

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