Question

A triangular road sign has base $30$ inches and height $40$ inches. What is its area?

Short answer

The area of the triangular road sign is$600$square inches.

Step-by-step solution

Step 1. Given Information  

The base of the triangular road is $30$inches and the height is $40$inches.

We have to find its area.

Step 2. Translate into an equation  

Let Abe the area.

The formula of the area of the triangle is $A=\frac{1}{2}\times b\times h$

So, the equation is$A=\frac{1}{2}\times 30\times 40.$

Step 3. Solve the equation 

By proceeding with the equation we get,

$$\begin{gathered} A=\frac{1}{2}\times 30\times 40 \\ A=600 \end{gathered}$$

Thus, the area of the triangular road is$600$square inches.

Step 4. Check the answer  

To check the answer use the area of the triangular road

Thus,

$$\begin{gathered} 600=\frac{1}{2}\times 30\times 40 \\ 600=600 \end{gathered}$$

It is true.