"A group of school kids are holding a school fundraiser by selling chocolates. To make the chocolate look appealing, they've decided to use a triangular prism shaped bar. Each bar will be wrapped in foil and they will be sold in boxes of 15 bars.For this chocolate mix, 1 cm^3 of chocolate has a mass of 0.6 grams."

The dimensions of each bar are 2.6 cm in height, 13 cm in length, 3 cm in base and two 3 cm sides. An example of this shape can be found here:Surface Area and Volume of a Isosceles Triangular Prism, Page 6

The tasks are the following:

* Find the volume of the chocolate bar mould

* Find the mass of chocolate needed for each bar in grams (g)

* Find the minimum amount of foil needed to wrap each bar

* Find a suitable sized box to hold 15 bars of chocolate

Can someone help me and show how it's done can't get over with it I'm stuck!