Posted by **hard questions PLZZ answer!** on Thursday, November 29, 2012 at 4:40pm.

6.

The length of the hypotenuse of a right triangle is 15 cm. The length of one leg is 9 cm. Find the length of the other leg.

6 cm

12 cm

17 cm

144 cm

- math -
**Steve**, Thursday, November 29, 2012 at 4:45pm
9^2 + x^2 = 15^2

81 + x^2 = 225

x^2 = 144

x = 12

or, since you are familiar with the 3-4-5 right triangle, you might have noticed that

9 = 3x3

15 = 3x5

so the other leg would be 3x4 = 12

- math -
**Ms. Sue**, Thursday, November 29, 2012 at 4:45pm
Use the Pythagorean Theorem.

a^2 + b^2 = c^2

a^2 + 9^2 = 15^2

Solve for a.

## Answer this Question

## Related Questions

- contemporary math - suppose that the length of one leg of a right triangle is 2...
- Math Algebra - The length of the hypotenuse of a right triangle is 30 m. The ...
- Math help! - The length of the hypotenuse of a right triangle is 13 m. The ...
- Math HELP! - The length of the hypotenuse of a right triangle is 15 ft. The ...
- math - The length of the hypotenuse of a right triangle is 13 m. The length of ...
- Math - Algebra - The length of the hypotenuse of a right triangle is 13 cm. The ...
- Math - The length of the hypotenuse of a right triangle is 15 cm. The length of ...
- math/geometry - complete the statements: To find the length of the hypotenuse of...
- math - 5. Find the length of the hypotenuse of a right triangle with legs of 20 ...
- Geometry - I need help in this problem: A 14-foot ladder is leaning against a ...

More Related Questions