Question

A triangular prism is 7 yards long and has a triangular face with a base of 2.8 yards and a height of 4.8 yards. The other two sides of the triangle are each 5 yards. What is the surface area of the triangular prism?

Answer 1

74.88

Using the formulasA=2AB+(a+b+c)h

AB=s(s﹣a)(s﹣b)(s﹣c)

s=a+b+c2