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Answer 100% of the questions/problems correctly.
Four questions.
The first step in calculating the percent of numbers is to change the percent to a decimal. When you see the word "of" in word problems, that signals multiplication, so take the decimal and multiply by the number.
The circumference is directly proportional to the radius. So increasing the radius by 50% causes the circumference to also increase by 50%.
65. That's one of the simplest math problems you will ever face.