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A triangular prism and two nets are shown:

 A right triangular prism is shown with two nets. The triangular base of the prism has height 5 inches, base 12 inches, and hypotenuse 13 inches. The length of the prism is 15 inches. Net A has 3 rectangles having dimensions 5 by 15, 15 by 12, and 15 by 13, and two triangles having legs 5 inches and 12 inches. Net B has 3 rectangles having dimensions 5 by 13, 13 by 12, and 13 by 15, and two triangles having legs 5 inches and 12 inches.

Which is the correct net of the prism and what is the surface area of the prism?

 

PLEASE EXPLAIN

 Mar 22, 2019
 #1
avatar+1264 
+3

To calculate the surface area is basicall calculating area all that is neccessary is for you too look where the values line up find the area's and add them I will help you get in to the right direction though I will Identify for you what you need to multiply You should be becoming familar with how to do this.

 

 

Right triangle \(5 * 12 = area\) 

 

Right triangle \(5 * 12 = area\)

 

Rectangle that slants along the hypnotuse \(13 * 15 = area\) 

 

Rectangle under the prism \(12 * 15 = area\) 

 

Rectangle in the back of the prism \(5 * 15 = area\) 

 

 

All you have to do is add products of these problems and tell me what you get.....

 Mar 22, 2019
 #3
avatar+2068 
+2

Well your first question would be then 570

Nickolas  Mar 22, 2019
 #4
avatar+1264 
+2

Edited answer: Oh now I see yes good that is the answer I though you were doing one at a time okay yes now try to determine the second problem

HiylinLink  Mar 22, 2019
edited by HiylinLink  Mar 22, 2019
 #2
avatar+1264 
+3

For the second part I will give you a hint: Look at the hyptoptuse on the right triangles how long is the rectangle on there???

 Mar 22, 2019
 #5
avatar+2068 
+2

Well for your second question it would be 

 

15*13= 195

Nickolas  Mar 22, 2019
 #6
avatar+2068 
+2

Hi Math is awsome smiley

Nickolas  Mar 22, 2019
edited by Nickolas  Mar 22, 2019
 #7
avatar+2068 
+3

Okay well thanks for telling me it is A and the surface area is 570 Thanks 

 Mar 22, 2019
 #8
avatar+1264 
+2

Yup that is correct your welcome.

HiylinLink  Mar 22, 2019
 #9
avatar+2068 
+3

Ha 9 just relized the triangles are supposed to be times once and then divided by 1/2 is that what I am supposed to do??

 Mar 22, 2019
 #10
avatar+1264 
+3

Are you writing for points or for the sake of acting like I didn't just tell you that XD????

HiylinLink  Mar 22, 2019
 #11
avatar+2068 
+4

Nice one XD 

 

Not really 

Nickolas  Mar 22, 2019

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