Answer:
1,400
Step-by-step explanation:
volume of a pyramid = LW(h/3)
The question is asking the lateral surface area of a cylinder with radius 3 in and length 12 in.
A = 2πr*l
.. = 2π*(3 in)*(12 in)
.. = 72π in^2
.. ≈ 226 in^2 . . . . . . . . . . matches selection a)
Answer: 
Step-by-step explanation:

A) 1x24
2x12
3x8
4x6
B) 1x40
2x20
4x10
5x8
C) the highest common is 8
hope this will help you