What is the circumference of a circle that has a radius of 10 centimeters? (Use 3.14 for ).C=cm I just don't get it at all

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He ! a group of farmers planned to clean 80 acres of wheat per day to finish the work on schedule. right before the work started, they received a new piece of machinery that them clean 10 more acres per day than originally planned. as a result of increased productivity in the last day before the deadline they only had to clean 30 acres. how many acres of wheat did the group of farmers have to clean?

There were 25 students who answered to a survey about sports. four-fifths of them like football. how many students like football?

Write the percent as a fraction or mixed number in simplest form. 0.8%