luas yang diarsir
=7/10 . πr²
=7/10 . 22/7 . 10,5²
=7/10 . 22/7 . 110,25
=7/10 . 346,5
=242,55cm²
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luas yang diarsir
=7/10 . πr²
=7/10 . 22/7 . 10,5²
=7/10 . 22/7 . 110,25
=7/10 . 346,5
=242,55cm²