Question

PLS HELP FAST A chocolate bar measures 40 mm wide, 80 mm long, and 5 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 rectangular prism with a height of 40 millimeters, a length of 80 millimeters, and a width of 5 and 1 over 2 millimeters.

Will’s Wrapping Company needs 3,860 mm2 of paper to wrap the chocolate bar.
Will’s Wrapping Company needs 7,720 mm2 of paper to wrap the chocolate bar.
Will’s Wrapping Company needs 8,160 mm2 of paper to wrap the chocolate bar.
Will’s Wrapping Company needs 15,440 mm2 of paper to wrap the chocolate bar.

Answer 1

Answer: 7720

Explanation:

The amount of the wrapper that is needed in order to wrap completely the chocolate bar is equal to the surface area of the bar. The surface area of the rectangular prism is calculated through the equation, SA =

2LW + 2WH + 2LHSubstituting the known values, SA = (2)(80 mm)(40 mm) + 2(40 mm)(5.5 mm) + 2(80 mm)(5.5 mm) SA = 6400 mm² + 440 mm² + 880 mm² SA = 7720 mm²Thus, the least area needed to completely cover or wrap the chocolate bar is 7720 mm².