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Using Pythagoras' theorem it is 2 inches
You have to use Pythagoras' Theorem to calculate the hypoteneuse.
fourteen and one quarter inches
The difference between the shorter leg and the longer leg is 60ft. In the model, this distance is only 4in. Multiply 60 by 12 to get the difference in inches, 720in Divide 720 by 4 to find that the model is 180 times smaller than the real thing. Multiply the shorter leg by 12 to convert it into inches, 75*12=900 Divide 900 by 180 and you will have the length of the shorter leg of the model, 5in.
Let the base length be x:- If: 2(0.5x+9)+x = 146 => x+18+x = 146 => 2x = 146-18 => x = 64 Therefore the isosceles triangle has 2 equal sides of 41 inches and a base of 64 inches Check: 41+41+64 = 146 inches