What is the correct answer

What is the circumference of a circle with an area of 50.24 cm²?

Siri can type 90 words in 40 minutes about how many words would you expect her to type in 10 minutes at this rate

Jessica is organizing a guided tour of the rain forest. the average profit per person that the touring company makes is given by the rational expression 18x+35/x, where x is the number of people going on the tour. what does the numerator of this rational expression represents?