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# geometry help

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an adventure company wants to run a zipline from the top of one building that is 90 feet tall to another building that is 70 feet tall. thetwobuidings at 47 feet apart. estimate the length in feet of the zipline. round your awnser to the nearest tenth

Guest Mar 30, 2017
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#1
+17613
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If you draw the picture, you will be able to draw a right triangle from the top of the shorter building straight across to the taller building (47 feet), up to the top of the taller building (20 feet) and slanting down (the zip line) back to the top of the shorter building.

Using the Pythagorean Theorem:  472 + 202  =  c2

If you finish this, the value of c will be an approximation for the length of the zip line.

(Actually, because of gravity, it will have to be a little longer.)

geno3141  Mar 30, 2017
#2
+76929
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The zipline will be the hypotenuse of a right triangle whose legs are 20 ft anf 47 ft......so we have

Length =  sqrt (20^2 + 47^2) ≈  51.1 ft

CPhill  Mar 30, 2017

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