Tolong jawabkan... plisss...

Rumus Tabung :

2πr² + 2πrt

Jawab :

= 2πr² + 2πrt

= (2 × 22/7 × 7 × 7) + ( 2 × 22/7 × 7 × 18)

= (2 × 22 ×7) + (2 × 22 × 18)

= 308 + 792

= 1.100 cm² (a)





Semoga membantu.................