Answer:
1) 136 m²
2) 920 ft²
Step-by-step explanation:
Prism one
Two triangles and 3 rectangles
Triangles
A = 1/2(6)(4)(2)
A = (6)(4)
A = 24 m²
Rectangles
Two rectangles; A = (2)(7)(5)
A = 70 m²
One rectangle; A = (7)(6)
A = 42 m²
Add together all the areas and get 136 m²
Prism two
Two triangles and 3 rectangles
Triangles
A = 1/2(15)(8)(2)
A = (15)(8)
A = 120 ft²
Rectangles
One rectangle; A = (17)(20)
A = 340 ft²
One rectangle; A = (20)(8)
A = 160 ft²
One rectangle; A = (20)(15)
A = 300 ft²
Add together all the areas and get 920 ft²
