9514 1404 393
Answer:
112 m²
Step-by-step explanation:
The area of a triangle is given by the formula ...
A = 1/2bh
Here, we have four identical triangles. Their total area is ...
SA = 4A = 4(1/2)bh = 2bh
SA = 2(8 m)(7 m) = 112 m² . . . . pyramid surface area
