hamtrash hamtrash

29-09-2016
Mathematics

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The length of a rectangle is 4cm longer than the width, and the perimeter is at least 48cm. What are the smallest possible dimensions of the rectangle

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kramermccauslan kramermccauslan

29-09-2016

So since the length is 4+w. Then the perimeter 2(4+w) + 2w >= 48.
so, 8+2w+2w>=48.
8+4w>=48
4w>=40
w>=10
so, the width must be at least 10. And the smallest dimensions can be 10 x 14.

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