Question

find the surface area of the triangular prism.
A- 81 in.^2
B- 70.8 in.^2
C- 63 in.^2
D- 78.6 in.^2

Answer 1

its B

Answer 2

its not the best drawing sorry

Answer 3

Hmm seems good enough to me

So surface area is going to be
\[\large A = bh + 2LS + LB\]

L = length
B = base
H = height
S = side length

So here we have

\[\large A = (3)(2.6) + 2(7)(3) + (7)(3)\]
\[\large A = 7.8 + 42 + 21\]
\[\large A = 7.8 + 63\]
\[\large A = 70.8\]

Answer 4

thank you everyone!

Answer 5

anytime!