Question

What is the value of a? Enter your answer in the box.

Answer 1

Answer:

a = 15

Step-by-step explanation:

Since this is a right triangle, we can use the Pythagorean theorem

a^2 + b^2 = c^2  where a and b are the legs and c is the hypotenuse

a^2 + 20^2 = 25^2

a^2 + 400 = 625

Subtract 400 from each side

a^2 = 225

Take the square root of each side

sqrt (a^2) = sqrt(225)

a = 15