Question 1054994
(w+2)(w+10) - (w+8)w = 60 
w^2 + 12w + 20 - w^2 - 8w = 60
4w + 20 = 60
4w = 40
w = 10m, L = 18m {{{10+ 8}}}
checking
(w+2)(w+10) - (w+8)w = 60 ng:

12m*20m - 18m*10m = 60m^2 CHECKS!