Question

bantu jawab Gunakan Cara pengerjaan!​

Answer 1

DIKETAHUI

[tex]\sf s=13~cm[/tex]

[tex]\sf t=12~cm[/tex]

[tex]\sf d=10~cm\implies r=5~cm[/tex]

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DITANYA

[tex]\sf LP_{gabungan}=...~?[/tex]

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JAWAB

[tex]\begin{aligned}\sf LP_{gabungan}&=\sf LS_{kerucut} + LS_{tabung} + LP_{ \frac{1}{2}bola}\\&=\sf \pi rs+ 2\pi rt + 2\pi {r}^{2} \\&=\sf \pi r(s+ 2t + 2r) \\&=\sf 3,14 \cdot 5(13+ 2 \cdot12+ 2 \cdot5)\\&=\sf 15,7(13+ 24+ 10) \\&=\sf 15,7(47)\\&=\sf {737,9 \:cm}^{2} \end{aligned}[/tex]