Answer:
1200 = 10x^2
Step-by-step explanation:
(length) height = x
width = 10x
Area = 1200 cm^2
Area = length * width
1200 = 10x * x
1200 = 10x^2
this is the answer if you are just finding the equation
but if you are finding x...
divide both sides by 10
120 = x^2
x = sqr rt. of 120
" * " is my multiplication sign
hehe
