Question

$a=\frac{1}{2} \times b \times h$
a triangle has a base of 18 in
and height of 7 in. what is its
area?
$25 \text{ in}^2$
$126 \text{ in}^2$
$70 \text{ in}^2$
$63 \text{ in}^2$

Explanation:

Step1: Recall triangle area formula

The area $A$ of a triangle is given by $A = \frac{1}{2} \times \text{base} \times \text{height}$

Step2: Substitute given values

Substitute base $= 18$ in, height $= 7$ in:
$A = \frac{1}{2} \times 18 \times 7$

Step3: Calculate the result

First compute $\frac{1}{2} \times 18 = 9$, then $9 \times 7 = 63$

Answer:

63 in² (matches the red option: 63 in²)