You are supposed to find the missing length for a leg on a right triangle using the pythagorean theorem. the hypotenuse length is 122cm.the length of one leg is 120cm, what is the length of the other leg?
2007-03-11 11:38:41 · 9 answers · asked by g c 1 in Science & Mathematics ➔ Mathematics
122^2 - 120^2 = x^2
14884 - 14400 = x^2
x = square root of 484
x = 22
2007-03-11 11:45:20 · answer #1 · answered by Anonymous · 0⤊ 0⤋
since a^2+b^2 = c^2
when c is the hypotenuse and a and b are legs
then when you are missing a leg use
a^2=c^2-b^2
or
b^2=c^2-a^2
either way
missing leg ^2 =122^2-120^2
missing leg^2=14884-14400
missing leg ^2 =484
missing leg =22 cm
2007-03-11 11:48:34 · answer #2 · answered by dla68 4 · 0⤊ 0⤋
Square the length of the hypotenuse, square the length of one leg, subtract the two, and take the square root of your answer. Use a calculator.
2007-03-11 11:47:39 · answer #3 · answered by TitoBob 7 · 0⤊ 0⤋
a= one leg=120
b=other leg
c=hypotenuse=122
a2+b2=c2 Phytagorean theorem
so b2=122*122-120*120=484=>b=22
2007-03-11 11:47:29 · answer #4 · answered by iulix_chiulix 1 · 0⤊ 0⤋
14884 - 14400 = 484
square root of 484 is 22
the answer is 22
2007-03-11 11:47:49 · answer #5 · answered by John Allen 2 · 0⤊ 0⤋
sqrt (122^2 - 120^2) = 22 cm.
2007-03-11 11:43:49 · answer #6 · answered by Newbody 4 · 0⤊ 0⤋
22 cm.
Now *you* need to get your butt in gear and learn Pythagorean Theorem before your next math test.
Doug
2007-03-11 11:43:46 · answer #7 · answered by doug_donaghue 7 · 0⤊ 1⤋
I do believe if you're hungry you should learn how to find your own food,that's for
your own good....here's a web site: nationalgeographic.com/homework
Good luck
2007-03-11 12:07:13 · answer #8 · answered by massimo 6 · 0⤊ 1⤋
a2+b2=c2
2007-03-11 11:45:05 · answer #9 · answered by Atila a 4 · 0⤊ 1⤋