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If the side length is 7, the perimeter is 35.
The answer is the number that 'x' has to be in order to make the statement true.Here is the ancient sacred secret procedure that you can use to find it:-9x -21 = 35 - xAdd 9x to each side of the equation:-21 = 35 + 8xSubtract 35 from each side:-56 = 8xDivide each side by 8:-7 = x
35
35 sq yds
The side opposite the 35° angle is [ 20 sin(35) ] = 11.472 (rounded)