SOLUTION: What is the width of a uniform expansion needed all around to double the area of a 10 cm by 15 cm rectangle?
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Question 917279: What is the width of a uniform expansion needed all around to double the area of a 10 cm by 15 cm rectangle?
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
The area using the uniform widthed expansion of w is
The amount of that area wanted is double of 10 by 15, so this value is
Those two are equal and you want to solve for w:
The arithmetic steps are not continued here but are for your effort.
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