Question 785861
c^2 = a^2 + b^2 

√15 is the hypotenuse

if L = 2W

then

(2W)^2 + W^2 = (√15)^2

4W^2 + W^2 = 15

5w^2 = 15

w^2 = 15/5 = 3

w= √3

then from L=2W
L= 2(√3)

ANSWER : L = 2√3 or 3.46