20 ! !
triangular prisms m and n are congruent. if one triangular face of prism m has area 8 in2, and the surface area of prism n is 166 in2, what is the area of one rectangular face from prism m?
a) 40 in2
b) 45 in2
c) 50 in2
d) 55 in2

Option C.

Step-by-step explanation:

In this problem I assume that the triangular base is an equilateral triangle

we know that

Triangular prisms M and N are congruent

so

If the surface area of prism N is 166 in2

then

the surface area of prism M is 166 in2 too

The surface area of the prism is equal to

where

B is the area of one triangular face

C is the area of one rectangular face

In this problem we have

substitute and solve for C

step-by-step explanation:

step-by-step explanation:

what grade level is this? need to know so i can look in my old textbooks!