Question 359749
It should be something like this: <br>

{{{(90 yards)}}}*{{{(12 inches)/(1 foot)}}}*{{{(3 feet)/(1 yard)}}}={{{(90*12 inches)}}}={{{3240 inches}}}<br>

The yards and the feet will "cancel" out, and you will be left with the answer in inches.<br>

I hope this helps!<br>