Question 206400
You are looking for a volume. And it look sliek the volume of a 'cubic type' ice chest. Not sure where the value of pi (3.14) plays here.
{{{VolumeOfChest = 8 * 7.5 * 12}}}
{{{V = 720}}} cubic feet
You are told ice costs 2.70/cubicfoot
So 
{{{Cost = Volume/CostPerUnit}}}
{{{Cost = 720 / 2.70}}}
{{{Cost = 267.67}}}
That's a lot of ice