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April 23, 2014

April 23, 2014

Posted by **joe** on Sunday, February 7, 2010 at 1:57pm.

so I did 50^2 + b^2 = 130^2

2500+b^2=16,900

b^2=14,400

b=120

so the choices are:

a. 100 yards

b. 110 yards

c. 120 yards

d. 180 yards

But I get for the perimeter

50+50+120+120=340

what am I doing wrong?

- Math -
**Reiny**, Sunday, February 7, 2010 at 2:20pmIf the question is as you typed it, there is nothing that you did wrong.

I recognized your dimensions as multiples of 10 of the basic 5,12, 13 right-angled triangle.

It wouldn't be the first time that a textbook has wrong answers.

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