Question

Find the surface area of the right triangular prism below.

http://static.k12.com/eli/bb/817/-1/0/2_36860_44974/-1/1a00ea5b932a526fd3f3dc71ca188f09d627c9b3/media/ad51bf006354ede81f393cbfa4c98c091f0fc626/mediaasset_652450_1.jpg

Answer 1

Select one:
a. 108 in2
b. 48 in2
c. 51 in2
d. 102 in2

Answer 2

we have 3 rectangles and 2 triangles that make up the surface area

Answer 3

Correct.

Answer 4

the area of a rectangle is just base times heigh, the area of a right triangle is half the base times height

Answer 5

Then add them all together and I have my surface area?

Answer 6

ya

Answer 7

Alright thanks.

Answer 8

you need to find the hypotenuse of the right triangle though

Answer 9

If I use google's calculator it only asks for the legs so I think I should be good. So long as 6 is the area of the two squares?

Answer 10

um looks like we have 8 x 4, 8 x 3 and 8 x hypotenuse for the 3 rectangles

Answer 11

Oh . . .

Answer 12

I got 5 as the hypotenuse.

Answer 13

Alright putting all the areas together I got 108.so it would be A.

Answer 14

yep

Answer 15

Alright thanks.