Find the area of the shaded region. express your answer in terms of .
3 in
6 in
9 in
12 in
18 in
what is the answerr

What is the exact volume of the cylinder (radius 13 in., height 30 in.)

Dylan and dusty plan to take weekly surfing lessons together. if the 2-hour lessons are $20 per person and they plan to spend $100 each on new surfboards, what is the maximum number of lessons the two can take if the total amount spent for lessons and surfboards is at most $480?

You are a clerk at convenience store. a customer owes 11.69 for a bag of potatoes chips. she gives you a five dollar bill. how much change should the customer receive?