A safety sign is a triangular shape and has a base of 28 inches and a height of 20 inches. Use the triangle area formula to find the number of square inches of metal needed to make the sign.(1 point)
The area of a triangle is calculated using the formula:
Area = 1/2 * base * height
Plugging in the values given:
Area = 1/2 * 28 * 20
Area = 1/2 * 560
Area = 280 square inches
Therefore, 280 square inches of metal are needed to make the sign.