What is the surface area of the triangular prism?

a. 336cm^2

b. 312cm^2

c. 216cm^2

d. 288cm^2

OPTION B

Step-by-step explanation:

Calculate the area the triangles (Both are equal, then you can multiply the area of one of them by 2):

Where b is the base and h is the height:

Calculate the area of the rectangles that are equal (you can multiply the area of one of them by 2):

Where l is the length and w is the width:

Calculate the area of the other rectangle:

Add the areas. Then, the result is:

so what is the question

step-by-step explanation:

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,