SOLUTION: a 3cm width stripe is cut from a square piece of cardboard. the area of the remaining part of the cardboard is 10cmx2 . Find the initial dimensions of square cardboard

Question 863731: a 3cm width stripe is cut from a square piece of cardboard. the area of the remaining part of the cardboard is 10cmx2 . Find the initial dimensions of square cardboard
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
Uncut square, area. Side length is x.

Remaining rectangle, area. This was given a value .

The meaningful solution is .
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