The formula for the area of a circle is a=pir^2. find the area of a circle with a diameter of 6.4 centimeters. use a calculator and round your answer to the nearest square centimeter.

Tony is charged $ 50 and additional $0.15 per miles for renting a car. a) represent the cost of renting a car with an equation,and the determine the cost if he drove it70 miles.b) what would be the cost of a car rental if the car was driven 250 miles? show work