Question 27
Two $10\times18\times\ell$ blocks are placed on either side of a cylinder of length $\ell$ to stop it from rolling. One block has a $10\times\ell$ face on the ground while the other has an $18\times\ell$ face on the ground. The block on the left sticks out 4 units more than the one on the right.
What is the radius of the cylinder?
What is the radius of the cylinder?