Asked by SkatingDJ

What is the lateral surface area of the prism?

Rectangular prism
Length: 17.2
Width: 3
Height: 5.5

283.8 m^2
292.4 m^2
325.4 m^2
407 m^2

I already found the surface area (325.4 m^2) and I'm using the formula for lateral surface area 2lh + 2wh... but I keep getting 222.2 which is not an option!:( Please tell me what I am doing wrong? Thanks
Answered by Ms. Sue
17.2 * 5.5 * 2 = 189.2
3 * 5.5 * 2 = 33

I get the same answer. Check with your teacher.

http://www.nelson.com/school/elementary/mathK8/quebec/0176237879/documents/NM8SB_11A.pdf
Answered by Amber
We were taught this way:
SA=LA+2B

LA=ph
p=perimeter of the base

So with that it would be set up like this: (2(17.2)+2(3))5.5+2(17.2*3)
And the answer would be 325.4 m^2
Answered by Amber
Oh! Sorry, I saw surface area and messed up. I apologize.
Answered by anna
so if you read the question carefully enough it says at the top: assume that the 3 x 5.5 m rectangles on the right and left are the bases. that means that 17.2 is the height.
LA=(2L + 2 W)H
LA=(2 x 3 + 2 x 5.5)17.2
LA=(6+11)17.2
LA=(17)17.2
LA=292.4
so the answer is 292.4m^2
HOPE THAT HELPS!!!
Answered by Saraya
1. C (325.4m^2)
2. B (292.4m^2)
3. C (216piecm^2)
4. D (288piecm^2)
5. A (3ft)
Got a 3/5 but these are correct
Answered by Saraya is right.
5/5 for Saraya. Though it would be best if you only use it to check your work.
Answered by mommy milkers
thx saraya!
Answered by senchou
saraya is still correct as of april 2022

<3
Answered by Millie Bobby Brown
Sarayas correct in late april!
Answered by lyre
saraya's right in 2023
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