Q:

A chocolate bar measures 50 mm wide, 90 mm long, and 3 and 1 over 2 mm high. Will's Wrapping Company is making a wrapper to cover the chocolate bar. Use the correct net and determine how much paper will be needed to make the wrapper. The net of a square prism with a height of 50 millimeters, a length of 90 millimeters, and a width of 3 and 1 over 2 millimeters. (4 points) Will's Wrapping Company needs 4,640 mm2 of paper to wrap the chocolate bar. Will's Wrapping Company needs 4,990 mm2 of paper to wrap the chocolate bar. Will's Wrapping Company needs 9,980 mm2 of paper to wrap the chocolate bar. Will's Wrapping Company needs 19,960 mm2 of paper to wrap the chocolate bar.

Accepted Solution

A:
For this case, the first thing you should do is calculate the surface area of a rectangular prism.
 The surface area in this case will be given by:
 A = 2 * ((w) * (l)) + 2 * ((h) * (l)) + 2 * ((h) * (w))
 Where,
 h = high
 l = long
 w = wide
 Substituting the values we have
 A = 2 * ((50) * (90)) + 2 * ((3.5) * (90)) + 2 * ((3.5) * (50))
 A = 9980 mm ^ 2
 Answer
 Will's Wrapping Company needs 9,980 mm2 of paper to wrap the chocolate bar.