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A triangle has a height of 12 inches and a base of 7 inches. What is the area of the triangle?

A. 22 in. [tex][tex]$^2$[/tex][/tex]
B. 84 in. [tex][tex]$^2$[/tex][/tex]
C. 68 in. [tex][tex]$^2$[/tex][/tex]
D. 42 in. [tex][tex]$^2$[/tex][/tex]

Sagot :

To find the area of a triangle, we use the formula:
[tex]\[ \text{Area} = \frac{1}{2} \times \text{base} \times \text{height} \][/tex]

Given:
- The height of the triangle is 12 inches.
- The base of the triangle is 7 inches.

Now, substitute the given values into the formula:

[tex]\[ \text{Area} = \frac{1}{2} \times 7 \, \text{inches} \times 12 \, \text{inches} \][/tex]

Calculate the multiplication in the equation first:

[tex]\[ \text{Area} = \frac{1}{2} \times 84 \, \text{square inches} \][/tex]

Then, divide by 2:

[tex]\[ \text{Area} = 42 \, \text{square inches} \][/tex]

Thus, the area of the triangle is:
[tex]\[ 42 \, \text{in}^2 \][/tex]

So, the correct answer is:
[tex]\[ 42 \, \text{in}^2 \][/tex]