Answer:
1720 mm²
Step-by-step explanation:
To find the surface area of a right prism find the area of each surface and add them together. (2 triangles are the same size) (3 rectangles are different sizes)
The area of a rectangle formula is (l)(w), and the area of a right triangle formula is (a)(b)/ 2.
Rectangle:
1. (l)(w)= (40)(8)= 320 mm²
2. (l)(w)= (40)(15)= 600 mm²
2. (l)(w)= (40)(17)= 680 mm²
Triangle:
(a)(b)/ 2
(8)(15)/ 2= 120/ 2= 60 mm² (for both triangles)
Last, find the sum of the surface areas.
320 mm²+ 600 mm² + 680 mm² + 60 mm² + 60 mm²=
1720 mm²
