Question

Need help finding surface and lateral area of a triangular prism!

Answer 1

http://prntscr.com/75imqz

Answer 2

@Kitty_Kat ? :D

Answer 3

sry i cant axcess the link

Answer 4

Oh, right, one minute

Answer 5

https://translate.google.com/translate?hl=en&sl=auto&tl=pl&u=http%3A%2F%2Fprntscr.com%2F75imqz

Answer 6

thnx

Answer 7

Surface Area: S.A. = L.A. + 2B
Lateral Area: L.A = ph (Perimeter and Height)

So for the Lateral area multiply the perimeter and the height, and for the Surface Area multiply Perimeter times height plus the base. Hopefully this helps. Im not going to give you the answer im going to help you find the answer :P :)

Answer 8

i think @Stewpeas_0831 got everything you should be good but tag me if u need help

Answer 9

Kk

Answer 10

Don't forget to round though! I remember when I was in middle school, and that would always trip me up.

Answer 11

How do I find perimeter of this? My calculations are coming out wrong

Answer 12

Perimeter is all the side lengths of the prism added together.

Answer 13

The perimeter is what you get when you add all of the numbers together.

Answer 14

I keep getting 110.98 and multiplying that times 3 doesn't get it near where it should be.

Answer 15

Your answer should (exactly) 58.49, but your rounded answer should be 58... right @Kitty_Kat??

Answer 16

\[9.49 + 37 + 9 + 3 = 58.49 \]

Answer 17

But should it be multiplied by 3? That's the height.

Answer 18

Or the 9.49...

Answer 19

No don't multiply anything. Ill start you off;

S.A. = L.A. + 2B
= ph + 2B
= (3 x 5) 8 + 2B
120 + 2B
= 120 + 2(1/2 x 5 x 4.3)
= 141.5

This is just an example of how to find Surface Area.

Lateral Area = perimeter times height