Respuesta :

A=1/4lw
Divide both sides by w
A/w = (1/4)l
Divide both sides by 1/4
4(A/l) = l

The answer is l = 4(A/w)
l= 4a/w.
a=1/4lw
÷w ÷w
a/w=1/4l
×4 ×4
4a/w=l
hope this helps :)