If a circle has a 3cm radius,
1. By what factor does the circumference change if the radius is tripled?
C = 2pi * radius
Why is the answer correct?
2. By what factor does the area change if the radius is doubled? Explain.
Area = pi * (rad)^2
Why is the answer correct
2 answers
I just answered a very similar question right above this one, give this question a go based on that and let us know which part you're finding tough to understand :)
Oh do u already have an answer?
1 answer