Monday

October 20, 2014

October 20, 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.

**Answer this Question**

**Related Questions**

Calculus - a college is planning to construct a new parking lot. the parking lot...

Calculus - a college is planning to construct a new parking lot. the parking lot...

Algebra - The length of a rectangular parking lot is 4 times its width w. The ...

math - A rectangular parking lot is to be constructed on land bordered on one ...

College Algebra - The parking lot is 25 by 40 feet. The owner wants to enlage ...

algebra - a local grocery store has plans to construct a rectangular parking lot...

algebra - the length of a rectangular parking lot is 3 meters less than twice ...

math - a rectangular parking lot is 110 yards long and 45 yard wide it costs ...

Math - Janice and Patricia each want to buy a new DVD player. They go to the Hot...

college algebra - a rectangular lot whose perimeter is 440 feet is fenced along ...