Posted by **Tabby** on Tuesday, December 4, 2007 at 8:07pm.

a and b are both the lengths of the legs of a right triangle, c is the length of the hypotenuse. Find the missing length if b=24 and c=25. I don't know how to do this.

- algebra -
**Claudia**, Tuesday, December 4, 2007 at 8:13pm
first you must have the formula

a^2+b^2=c^2

now you just have to plugg in the numbers into the formula

a^2+24^2=25^2

solve for a

do it and then post your answer I will check if it is right

- algebra -
**Ms. Sue**, Tuesday, December 4, 2007 at 8:13pm
You'll need to plug these lengths in this theorem:

a^2 + b^2 = c^2

a^2 + 576 = 625

a^2 = 49

a = ?

- algebra -
**Tabby**, Tuesday, December 4, 2007 at 8:19pm
a = 7?

- algebra -
**Ms. Sue**, Tuesday, December 4, 2007 at 8:20pm
Right! a = 7

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