Answer:
5.857 cm
Step-by-step explanation:
A cylinder's volume is given by the formula:
-The small cylinder's dimensions are d=7, h=14, it's volume is calculated as:
We are told that this volume fills the big cylinder to a height of 5cm.
#We equate this volume to the big cylinder's 5cm and solve for r:
Hence, the radius of the big cylinder is 5.857 cm