Question

problem 9: spiral review determine the area of this triangle.

Explanation:

Step1: Identify base and height

By counting grid - squares, base $b = 6$ units and height $h = 7$ units.

Step2: Apply area formula

The area formula for a triangle is $A=\frac{1}{2}bh$. Substitute $b = 6$ and $h = 7$ into the formula: $A=\frac{1}{2}\times6\times7$.

Step3: Calculate the area

$A=\frac{1}{2}\times6\times7 = 21$ square units.

Answer:

21 square units