Some more math test question :
A creeper plant is climbing up and around a cylindrical tree trunk in a helical manner. The tree trunk has a height of 420 inches and a circumference of 32 inches.
If the creeper covers a vertical distance of 60 inches in one complete twist around the tree trunk, what is the total length of the creeper?
a - 476"
b - 458"
c - 490"
d - 410"