Answer:
Explanation:
Alright , lets get started.
When we see the tent, we see are are 5 faces of this tent.
Two faces are triangular.
Two faces are rectangular.
And one base is also rectangular.
Area of one triangle = 

So the area of two triangles = 

Now, area of one rectangular face = 

So, area of both rectangular faces = 

Area of rectangular base = 

Total area = 

So the amount of fabric needed to make tent is 136 square feet. : Answer
Hope it will help :)