Pre-Algebra Examples

 $\begin{array}{r} b = & 4.5 \\ h = & 5 \end{array}$

Step 1

The area of a triangle is equal to $\frac{1}{2}$ the base times the height.

$\frac{1}{2} \cdot (b a s e) \cdot (h e i g h t)$

Step 2

Substitute the values of the base $b = 4.5$ and height $h = 5$ into the formula for the area of a triangle.

$\frac{1}{2} \cdot 4.5 \cdot 5$

Step 3

Combine $\frac{1}{2}$ and $4.5$ .

$\frac{4.5}{2} \cdot 5$

Step 4

Simplify the expression.

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Step 4.1

Divide $4.5$ by $2$ .

$2.25 \cdot 5$

Step 4.2

Multiply $2.25$ by $5$ .

$11.25$