SOLUTION: For some reason I cant get the right answer to this question A wedge of cheese in the shape of a triangular prism. It is 6cm high and each triangular face has a side length of

Algebra ->  Surface-area -> SOLUTION: For some reason I cant get the right answer to this question A wedge of cheese in the shape of a triangular prism. It is 6cm high and each triangular face has a side length of       Log On


   



Question 1061652: For some reason I cant get the right answer to this question
A wedge of cheese in the shape of a triangular prism. It is 6cm high and each triangular face has a side length of 10cm and an apothem of 2.9cm.
(a)How much plastic wrap is needed to cover the cheese? The plastic wrap costs $0.0005/cm^2. What is the cost to package the cheese?

much appreciated :)

Found 2 solutions by solver91311, josmiceli:
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


What have you tried?

John

My calculator said it, I believe it, that settles it


Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
I'll give it a shot:
The formula for surface area of a
triangular prism is:
+A+=+a%2Ab+%2B+3b%2Ah+
+h+=+6+ cm
+a+=+2.9+ cm
+b+=+10+ cm
-------------------
+A+=+2.9%2A10+%2B+3%2A10%2A6+
+A+=+29+%2B+180+
+A+=+209+ cm2
--------------------
[ cost ] = [ cm2 ] x [ cost/cm2 ]
+C+=+209%2A.0005+
+C+=+.1045+ dollars