calculate the total surface area of a cone with a base radius of 6cm and slant height 10cm. I need the working please

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 receive 15% of the profit from a car wash how much money do you receive from a profit of 300

How much orange juice do you need to make 2 servings of lemony orange slush?