What is the standard deviation for 5,5,5,6,6,6,6,7,7?

Determine the volume of a cylinder bucket if the diameter is 8.5 in. and the height is 11.5 in.

Why did the ice arena get so hot after the big game (this is math related google it to find the paper

Technicians have installed a center pivot, circular irrigator for a farm that covers 25 acres. a.) how long is the irrigation boom (in feet) from the center pivot to its farthest extent? b.) if the irrigation boom makes 4 full revolutions in a day, how many miles does the end of the boom travel in 5 days?