Posted by Dee on .
A landowner digs a 15 meter deep well with a diameter of 2.8 meters. The landowner spreads the dirt dug out of the holds to form a flat platform 31.5 meters by 6 meters. What is the length of the platform?

Geometry 
Reiny,
volume of cylindrical well
= π(1.4)^ (15) = 29.4π cubic metres.
confused about the platform.
When you state the platform as
"31.5 m by 6 m" , aren't you giving us the length?
Is the platform a rectangle, where you gave the length and width and we have to find the height ?