1.Hilary's Horse Hideaway is buying dirt to fill their circular training area. The training circle is 28 feet across. What is the area of the training arena? 2.The dirt is sold in truckloads that cover 75 square feet of ground. How many truckloads of dirt will Hilary need?

no robots and pls show you work :)

Evaluate the expression for the given value of the variable. 5×(h+3) for h=7

The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%

Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?