The surface area of a cylinder is 1000π square centimeters. The radius of the cylinder is four times the height. What is the height of the cylinder?

1. what is the formula for finding the vertical distance between two points on a coordinate plane?

Prove that quadrilateral is a rhombus.

Adecibel is a logarithmic unit that can be used to measure the intensity of a sound. the function y = 10logx gives the intensity of a sound in decibels, where x is the ratio of the intensity of the sound to a reference intensity. the reference intensity is generally set at the threshold of hearing. use the graphing utility to graph the decibel function. a whisper has a sound intensity of 30 decibels. use your graph to you complete the following statement. the sound intensity of a whisper is times the reference intensity.