Question 1168045
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Let x be the length of the side of each square that is cut out of the corners of the sheet.<br>
The length of the planter will then be 28-2x; the width will be 21-2x; the height will be x.<br>
The length is to be twice the height:<br>
{{{28-2x = 2(x)}}}<br>
Solve for x using basic algebra.<br>
Then use that value to write the ratio of the length to the width of the planter: (28-2x):(21-2x).<br>