A triangle has a base of length 9 and a height of 4. What is the area of the triangle?

The area of a triangle is calculated using the formula: Area $$= \frac{1}{2} \times \text{base} \times \text{height}$$.

Given:

• Base $$= 9$$
• Height $$= 4$$

Area $$= \frac{1}{2} \times 9 \times 4 = \frac{1}{2} \times 36 = 18$$.

Ответ: $$18$$