Area of a triangle

What is the area of a triangle that has the base 4 1/4 and the height of 3 3/3?

Correct answer:

A =  8.5

Step-by-step explanation:

$$\begin{gathered} a=4+{\displaystyle \frac{1}{4}}={\displaystyle \frac{17}{4}}=4\frac{1}{4}=4.25 \\ h=3+{\displaystyle \frac{3}{3}}=4 \\ A={\displaystyle \frac{a\cdot h}{2}}={\displaystyle \frac{4.25\cdot 4}{2}}={\displaystyle \frac{17}{2}}=8\frac{1}{2}=8.5 \end{gathered}$$

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