Acircular pool with a diameter of 18ft will have a uniform 4ft concerts walkway poured around it if the concrete cost $4.25 a square ft how much will it cost for the concrete?

Drag and drop a statement or reason to each box to complete the proof. statement reason △abc , de⎯⎯⎯⎯⎯∥ac⎯⎯⎯⎯⎯ given corresponding angles postulate △bde∼△bac babd=bcbe polygon similarity postulate ba=bd+dabc=be+ec bd+dabd=be+ecbe substitution property of equality bdbd+dabd=bebe+ecbe addition of fractions 1+dabd=1+ecbe simplify. dabd=ecbe subtraction property of equality

What is the thickest layer of earth called?

Quais são as consequencias (positivas e negativas) da extração dos minerais metálicos