Jawaban:
Lp bola=4×π×r×r
=4ײ²/7×14×14
=4×22×2×14
=88×2×14
=176×14=2464:2=1232
b.1232cm²
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Jawaban:
Lp bola=4×π×r×r
=4ײ²/7×14×14
=4×22×2×14
=88×2×14
=176×14=2464:2=1232
b.1232cm²