Question

Perhatikan gambar berikut!
Hitunglah luas permukaan tabung tersebut!

(bntu jwb pke cara yaa!!, skrng dikumpul)​

Answer 1

[tex]\tt lp = 2 \times \pi \times r(r + t)[/tex]

[tex]\tt lp = 2 \times \frac{22}{7} \times 3,5(3,5 + 8)[/tex]

[tex]\tt lp = 2 \times \frac{22}{\cancel7} \times \frac{\cancel{35}}{10} (11,5)[/tex]

[tex]\tt lp = 2 \times 22 \times \frac{5}{10} (11,5)[/tex]

[tex]\tt lp =\cancel{ 44 }\times \frac{1}{\cancel2} (11,5)[/tex]

[tex]\tt lp = 22(11,5)[/tex]

[tex]\tt lp =\underline{ \boxed{\tt 253 \: \: {cm}^{2} }}[/tex]