so izii
KELAS 5 SD
TERLAMPIR 
KELAS 5 SD
TERLAMPIR
D. 8.052 cm2
Penjelasan dengan langkah-langkah:
[tex] \sf \: lp = 2 \pi r \: (r + t)[/tex]
[tex] \sf \: lp = 2 \times \frac{22}{ \bcancel7} \times \bcancel{ 2 {1}^{3} } \times (21 + 40)[/tex]
[tex] \sf \: lp = 2 \times 66 \times 61[/tex]
[tex] \sf \: lp = 132 \times 61[/tex]
[tex] \sf \: lp = \red{ 8.052 \: {cm}^{2} }[/tex]
[tex]\:[/tex]
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Lp tabung
2πr ( r + t )
2 × 22/7 × 21 ( 21 + 40 )
2 × 22 × 3 ( 61 )
44 × 3 ( 61 )
132 ( 61 )
8.052 cm²
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