[size=150][color=#1e84cc][b]Here is a 3d model of a topographical map of Lake Milton. A topographical map shows horizontal cross sections of a 3d object. This map shows cross sections at depths of 5, 10, 20, 30, and 40 feet below the surface. Click and hold to rotate the view.[/b][/color][/size]
What do you notice? What do you wonder?[br][br]
The surface of the lake is 2.46 square miles. How many square feet is it?
Estimate the Volume of the lake by multiplying Surface Area by Depth. Would this be an overestimate or underestimate? Explain.
This volume estimate would be 2,743,240,560 (2.7 Billion) cubic feet! However this is an overestimate since the cross sectional area of the lake gets smaller for greater depths. Since its not prism shaped, we cannot use V = Bh to get an accurate calculation