If the base of a triangle is 12' and the height is 12', what is the area in square feet?

To determine the area of a triangle, the formula used is:

Area = (base × height) / 2.

In this scenario, the base of the triangle is given as 12 feet, and the height is also 12 feet. Plugging these values into the formula gives:

Area = (12 ft × 12 ft) / 2 = 144 ft² / 2 = 72 ft².

Therefore, the area of the triangle is 72 square feet. This informs us that option B is indeed the correct answer, as it precisely represents the calculated area.