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=3,14.36 + 3,14. 6. 10
=113,04 + 188,4
=301,44 cm
s²=6²+8²
=36+64
=100
s=√100
=10
L.Selimut =×r×s
=3,14×6×10
188,4 cm
Jadi, l. permukaan = ×r×s + ×r²
=(3.14×6×10 )+(3.14×6×6)
=188,4 +113,04
=301,44 cm² (A.)
Semoga Membantu^^