They left $6.72 for a tip.
42 x 0.16 = 6.72
18^2 + 68^2 =
= 324 + 4,624
= 4,948
74^2 = 5,476
4,848 is not equal to 5,476.
Since the sum of the squares of the lengths of the two shorter sides is not equal to the square of the length of the longest side, the triangle is not a right triangle.
Well what is 30x3 (because that is how you would find what is one third of unknown) then you find the answer witch is 90$
