Find the measure of angle b. PLZ HELP
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So before we can find the perimeter, we need to find the hypotenuse. Since this is a right triangle, we can use the pythagorean theorem. The equation for that is , in which a and b are the legs of the triangle and c is the hypotenuse.
With this info, we can form our equation:
Firstly, solve the exponents:
Next, combine everything on the left side:
Next, square root both sides, and your hypotenuse will be 15 = c.
Now that we have all the triangle side lengths, just add everything up:
In short, the perimeter is 36 inches.