<span>When 3 Triangle sides are known:
</span><span>The longest side must be less than the sum of the other 2 sides.
5, 12 and 13 - can be constructed
</span>2, 11 and 15 <span>- can be constructed
3, 7 and 11 - CAN'T be constructed - the longest side is greater than the sum of the other two.
4, 8 and 15 </span><span>- CAN'T be constructed - the longest side is greater than the sum of the other two
Source:
http://www.1728.org/trianinq.htm
.</span>
That will have 12x19+15 which equals 243 dollars.
Sum/5 = 90
so Sum = 450 which should be divided by 6
450/6 = 75 as the real average.
3x2+9x-54
6+9x-54
6-54+9x
-48+9x
