Question

What is the approximate length of the lateral surface for the cylinder shown here in net form?
a. 31.4 in
b. 62.8 in
c. 78.5 in
d. 376.8 in

Answer 1

Now, the width of that rectangle will act as the height of the cylinder when you roll that up - imagine that?

Answer 2

\[2\pi r_1^2+ 2\pi r_2h\]

Answer 3

but it works because 12 being the circumference

Answer 4

I think its like this