Question 1047890
let x be width then
lenght is x+6

x(x+6) is the area

new dimensions
x+2
x+8
(x+2)(x+8)=64+x(x+6)

10x+16=64+6x
4x=48
x=12

back the question
widht is 12
lenght is 18
area is {{{216}}}


let increase each dimension by 2
if widht becomes 14 and lenght becomes 20
then area is {{{280}}} which is {{{64}}} increases