The area of a square with sides of 12.4 centimetres is 12.4 x 12.4 = 153 cm2 (square centimetres).
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124
2√31
0 and 1 are consecutive whole numbers that lie between -sqrt(124) and +sqrt(124).
All you have to do is multiplie the 14 and the 9, and you will get an answer of 124. All you have to do is multiplie the 14 and the 9, and you will get an answer of 124.
sqrt(124) = 11.1 (to the nearest tenth). sqrt(124) = sqrt(4*31) = 2*sqrt(31)