Ineed with my assignment, does anyone know the answer to this?

The base length of the triangle is 15 units

Step-by-step explanation:

The area of a triangle is given by the formula; 1/2 *base* perpendicular height. In the presented scenario, we can determine the base by solving for base in the given equation; 1/2 *base*7 =52.5. Multiply both sides by 2 yields; base*7 =105. Dividing by 7 yields; base=15 units