15.8114 metres (rounded)
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117m2
a=3 b=2 c=diagonal a squared add b squared equals c squared 9 add 4 = 13 square root 13 and ther's your answer
A 9 x 12 rectangle has a diagonal of 15.
(13 ft 3 inches) x (13 ft 9 inches) is approximately 16.93 square meters.
It is nine hundredths of a metre (also called nine centimetres).