Answer:
1.5
Step-by-step explanation:
The radius of cylinder B can be found using the formula for area:
A = πr²
9π = πr² . . . substitute given area for cylinder B
9 = r² . . . . divide by π
3 = r . . . . . take the square root
Then the circumference of cylinder B is ...
C = 2πr = 2π·3 = 6π
The scale factor from cylinder A to cylinder B is then ...
scale factor = (B circumference)/(A circumference)
scale factor = (6π)/(4π) = 3/2
Cylinder A dimensions are multiplied by 1.5 to produce the dimensions of Cylinder B.
