4m squared? Whats M?
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m2 - 8m + 16 = 0 (m - 4)2 = 0 so m = 4
3M x x 4M = 12M^2
This question is impossible to answer because the possible length and width of the rectangle could be 15 cm and 4 cm respectively but 15*4 = 60 cm squared and not 60 m squared.
10 metres squared, multiply length by width
24