Question 844092
The area, {{{(1/2)(25)(14) *m^2}}}.


The cost, {{{(1/2)(25)(14) *m^2* 4(dollars/m^2)}}};


The rest is just simplifying and computing the result.  Do you need help on the simplifying?


"YES",
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{{{(1/2)(25)(14) *m^2* 4(dollars/m^2)}}}, notice how the units are arranged!  The square m will be canceled leaving just dollars.


The numbers:
{{{(1/2)(25)(14)*4}}}
{{{(25*14*4)/2}}}
{{{(25*2*7*4)/2}}}
{{{(25*cross(2)*7*4)/cross(2)}}}
{{{(25*7*4/1)=25*4*7}}}
{{{100*7}}}
{{{highlight(700)}}}