9514 1404 393
Answer:
96 m²
Step-by-step explanation:
The total area of the two triangular bases is ...
A = 2(1/2)bh = bh
A = (3 m)(4 m) = 12 m²
The total area of the rectangular faces is ...
A = Ph = (3 m +4 m +5 m)(7 m) = 84 m²
Then the total surface area of the prism is ...
12 m² +84 m² = 96 m² . . . prism surface area
