What is a shape with 4 equal sides and no right angels

Can someone 50 first drop menu 0.80 or 0.75 or 1.20 or 4.00 second drop menu 4.00 or 0.75 or 0.25 or 3.75 3rd 15,6,10, or 9 4th yes or no

The depth of a lake at a certain point, wich is a function of the distance of that point from shore, is 30 feet.

Find percent notation for 0.008 0.008=