26-09-2019
Mathematics

contestada

The length of a rectangle is twice its width.
The perimeter of the rectangle is 42 cm.

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curupira curupira

27-09-2019

Answer:

2 (x+2x)=42

or,6×=42

or x=42/6

or x=7cm

width =x=7cm

length=2x=14cm

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