Question

Please Help!! :) I'll draw shape.
Calculate the surface area of this triangular prism.
255m2
360m2
468m2
495m2

Answer 1

The 12m is on the bottom not the side by the way.

Answer 2

Surface area = area of all of the sides

there are 5 sides
area of rectangles = base * height
area of triangles = 0.5*base*height

Answer 3

So it would be 0.5 x 12 x 10?

Answer 4

no, the triangle is the top and bottom piece
each triangle = 0.5*9*12

Answer 5

i got 108

Answer 6

that's what i got for the 2 triangles. now you have to calculate the areas of the three remaining rectangles

Answer 7

i did 0.5 * 9 * 12 * 2

Answer 8

that's right

Answer 9

360?

Answer 10

360 for what?

Answer 11

360 for the area of rectangles. I got 468m2 as my total is that correct?

Answer 12

looks right

Answer 13

Sweet. Thanks buddy heres a medal