To find the area of a triangle, you use the formula: Area = 1/2 x base x height.
Substitute the values given in the problem:
Area = 1/2 x 28 inches x 20 inches
Area = 1/2 x 560 square inches
Area = 280 square inches
Therefore, to make the sign, 280 square inches of metal are needed.
Use the image to answer the question.
A photograph shows a triangular sign board with an exclamation mark and text as ‘hazard” below it.
Source: mindscanner/Shutterstock
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)
Responses
To make the sign, 280 square inches of metal are needed.
To make the sign, 280 square inches of metal are needed.
To make the sign, 1,120 square inches of metal are needed.
To make the sign, 1,120 square inches of metal are needed.
To make the sign, 48 square inches of metal are needed.
To make the sign, 48 square inches of metal are needed.
To make the sign, 560 square inches of metal are needed.
1 answer
1 answer