Work out the area of the circle. Take pi to be 3.142 and write down all the digits given by your calculator.

The radius is 21cm.

Please help!!

41/2 - 1 1/3 what is the answer as a fraction?

Write as a product: ac^2–ad+c^3–cd–bc^2+bd

Consider this expression and the steps to evaluate it. 4^5(−2)^9/4^8(−2)^3 1. apply the quotient of powers:      (−2)^a/4^b 2. evaluate powers:           c/d select the value of each variable. a = _ b = _ c = _ d = _