The net of an isosceles triangular prism is shown here. What is the surface area, in square units, of the triangular prism?
A.94 units^2
B.98 units^2
C.129 units^2
D.136 units^2
First, area of the middle rectangle: 6*7=42 unit^2 Top rectangle = 5*7 = 35 units bottom rectangle = 5*7 = 35 units Area of each end (triangle) = base * height/2 = 6*4/2= 12 Total area of ends = 2 * 12 = 24
Surface of prism (= area of net) = 42+35+35+12+12 = 136 unit^2
