Basic Math Examples

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

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

Step 1

The surface area of a sphere is equal to

4

$4$ times Pi

π

$π$ times the radius squared.

4 π \cdot {(r a d i u s)}^{2}

$4 π \cdot {(r a d i u s)}^{2}$

Step 2

Substitute the value of the radius

r

$r$ into the formula to find the surface area of the sphere. Pi

π

$π$ is approximately equal to

3.14

$3.14$ .

4 \cdot π \cdot r^{2}

$4 \cdot π \cdot r^{2}$

Step 3

Multiply

4 π

$4 π$ by

r^{2}

$r^{2}$ .

4 π r^{2}

$4 π r^{2}$