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d = 28 cm → r =14 cm
t = 10 cm
Ditanyakan :
Luas permukaan tanpa tutup untuk 10 kaleng
Jawab :
Luas permukaan = πr² + 2πrt
= πr ( r + 2t)
= 22/7 x 14 ( 14 + 2 x 10 )
= 44 ( 14 + 20 )
= 44 (34)
=1496 cm²
Jadi, untuk 10 kaleng berarti 1496 x 10 = 14960 cm²
# Maaf kalau salah