Question

what is the area?
8 mm
10 mm
square millimeters
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work it out
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Explanation:

Step1: Recall triangle area formula

The area of a right - triangle is given by the formula $A=\frac{1}{2}\times base\times height$.

Step2: Identify base and height

In the given right - triangle, the base $b = 10$ mm and the height $h = 8$ mm.

Step3: Substitute values into the formula

Substitute $b = 10$ and $h = 8$ into the formula $A=\frac{1}{2}\times b\times h$. We get $A=\frac{1}{2}\times10\times8$.
First, calculate $10\times8 = 80$. Then, $\frac{1}{2}\times80=40$.

Answer:

40