10 inches your hypotenuse is always going to be equal or bigger than the sum of the two sides
Http://www.pierce.ctc.edu/staff/dlippman/mathinsociety/Finance1.0.pdf I think this will help
180 - 46 - 24 = 110
d+ 80 = 110
d = 30
answer
d = 30
4 significant figures.
we can start counting the numbers after all the zeros in front. the zeros in front doesn't count in. but the zeros after the first number that is 1 or larger counts.
therefore we only need to look at 3010