(10+0.6)whole square-(10-0.6)whole square
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=(10+0.6)^2 - (10-0.6)^2
=(10^2 +2*10*0.6+0.6^2)-(10^2-2*10*0.6+0.6^2)
=(100+12+0.36)-(100-12+0.36)
=112.36-88.36
=24.00
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