4a * H = 448cm2
H = 28cm
4a * 28cm = 448cm2
4a = 448cm2 : 28cm
4a = 16cm ||:4
a = 4cm
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4a * H = 448cm2
H = 28cm
4a * 28cm = 448cm2
4a = 448cm2 : 28cm
4a = 16cm ||:4
a = 4cm