Which formula correctly gives the area of a triangle?

Which formula correctly gives the area of a triangle?

• A. A = 1/2 bh
• B. A = bh
• C. A = s^2
• D. P = a+b+c

Answer: (A)

The area of a triangle is found by multiplying the base by the height and then taking half of that product. The base is any side used as a reference, and the height is the perpendicular distance from that base to the opposite vertex. So the area is A = 1/2 bh. The other expressions are for different shapes or measurements: bh would give the area of a rectangle with the same base and height, s^2 is the area of a square with side length s, and P = a + b + c is the perimeter of a triangle. Therefore, A = 1/2 bh is the correct formula for a triangle's area.

The area of a triangle is found by multiplying the base by the height and then taking half of that product. The base is any side used as a reference, and the height is the perpendicular distance from that base to the opposite vertex. So the area is A = 1/2 bh. The other expressions are for different shapes or measurements: bh would give the area of a rectangle with the same base and height, s^2 is the area of a square with side length s, and P = a + b + c is the perimeter of a triangle. Therefore, A = 1/2 bh is the correct formula for a triangle's area.