<PRE><B>Question 1136704</B>
A rectangle has 4 right angles, so the diagonal
makes a right triangle. 
Let {{{ x }}} = the unknown side of the rectangle.
One of the known right triangles has sides in the ratio:
3 - 4 - 5
The sides are in the same ratio:
x/20 - 80/20 - 1000/20 same ratios as: 3 - 4 - 5
So I can say:
{{{ x = 60 }}} so that {{{ x/20 = 3 }}}
dimensions are 60m x 80m x 1000m
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