Question

Use the formula S equals 2 times one-half times b h plus h w plus s w plus b w to find the surface area of a triangular prism with the following dimensions:

base = 3 ft
height = 2 ft
width = 5 ft
side = 4 ft
A. S equals 48 square feet
B. S equals 51 square feet
C. S equals 61 square feet
D. S equals 102 square feet

Answer 1

The surface area is given by:
S=2(1/2bh)+(hw)+(sw)+(bw)
where:
S=surface area
b=base
h=height
s=side
w=width
from the information:
b=3 ft, h=2 ft, s=4 ft, w=5 ft
Hence:
S=2(1/2*3*2)+(2*5)+(4*5)+(3*5)
S=51 sq. feet
Answer: B