What percent did you tip if your lunch was $10 and you left $2?

How do i work this problem out using the equation a=pe^rt

Ametal rod needs to be 9 feet and 5.5 inches in length. the sections of the poles being used are each 1 foot and 10.5 inches long. how many 1ft 10.5in sections would be needed to complete the 9ft 5.5in metal rod? and how many inches of material will be left?

What is the circumference of the pie