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Verified answer
R = 7 cmd = 2 × 7 = 14 cm
Ls = π × d × t
= 22/7 × 14 × 10
= 440 cm² ( A )
r= 7cm
Dit: L. Selimut...?
Jawab: L. Selimut= 2×phi×r×t
= 2×22/7×7×10
= 440 cm² (a)
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