Question

The side of a square are increasing at 2 inches per second. How fast is the diagonal increasing when the side is 3 inches?

Answer 1

5113

Answer 2

Diagonal --- d
side ---x

d^2 = x^2 + x^2
d = √2x
dd/dt = √2 dx/dt
at any length of x
dd/dt = √2(2)
= 2√2 inches per second

Answer 3

thank you