(05.06)A chocolate bar measures 30 mm wide, 70 mm long, and four and one over two 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.
Accepted Solution
A:
we know that
[surface area]=2*[area of the base]+[perimeter of the base]*height area of the base=30*70-----> 2100 mm²
perimeter of the base=2*(30+70)-----> 200 mm height=4 1/2 mm-----> (4*2+1)/2-----> 9/2 mm [surface area]=2*[2100]+[200]*9/2-----> 5100 mm²