The measures of the legs of a right triangle are 15m and 20m. What is the length of the hypotenuse

25 m

Step-by-step explanation:

Use the Pythagorean Theorem.

a^2+b^2=c^2

Or just know you are finding the hypotenuse and use c=sqrt (a^2+b^2)

If you were finding a leg use a=sqrt (c^2-b^2).

So sqrt (15^2+20^2)

=sqrt (225+400)

=sqrt (625)

=25