Question

A rectangular ribbon of width = 21cm is folded along its width and cylinder or radius = 12cm is formed. Find CSA of cylinder​

Answer 1

Answer:

9504

Step-by-step explanation:

using

$\pi {r}^{2} h$

Answer 2

Answer:

2640cm(square)

Step-by-step explanation:

curved surface area =2×pie×r×h

2×22/7×20×21=2640cm(square)