Triangle inequality rule states that the sum of eachpair of sides must be greater than the third sides. 240 + 123 > 207 true 240 + 207 > 123 true 123 + 207 > 240 true
A = √(s(s-a)(s-b)(s-c)) s is the semi-perimeter (a + b + c)/2 s = (240 + 123 + 207)/2 s = 285 A = √(285*(285-249)(285-123)(285-207)) A = 12,730 units^2
The mixture is 1 cup of vinegar to 1 gallon of water. Since 1 gallon is 16 cups, it could also be 1 cup of vinegar to 16 cups of water. If we had 80 fluid ounces of water, we'd have to change the water to 5 fluid ounces to keep the mixture the same. (It's still 1 part vinegar, 16 parts water)
