Question 1050576
Find the difference in area between 10 inch pie and 9 inch pie.
{{{A=pi*(10)^2-pi*(9)^2=59.69}}}{{{cm^2}}}
That's the difference for one pie. 
Multiply that by the number of pies and the cost of each square cm to get the total.
{{{T=200(1.5)(59.69)}}}
{{{T=17906.55}}}{{{cents}}}
.
.
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It'll cost $179.06 to make the larger pies.