Matematika

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tolong pake cara ya...
tolong pake cara ya...

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  • L¹=8×21=168 cm²
    L²=7×7=49 cm²
    L³=7×7=49 cm²
    L4=22/7×21×21×½=1.386×½=693 cm²
    L¹+L²+L³+L4=168+49+49+693=959 cm²

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