Respuesta :

First of all gall, the end is NOT an exponent, its the unit of measurement for finding the area (thats square units)

Heres the answer:
31.5 square units.
Explanation:
The formula for the area of a triangle is bh/2
The formula for the area of a triangle is bh
(Use this formula and try to find the real explanation)

Answer:

7 x 3 = 21

7 x 3 = 21 / 2 = 10.5

21 + 10.5 = 31.5^2