Question

What’s 1 and what’s 2 ?

Answer 1

For question 1:

The length of hypotenuse expression =√(8^2+9^2)

For question 2:

The expression for length a is

a=√(15^2-4^2)

Explanation:

For question 1:

The length of hypotenuse expression =√(8^2+9^2)

For question 2:

Then expression for length a is

a=√(15^2-4^2)