Can I get some help in this question from geometry? I will answer one of your questions!!! :)

1) We know, Circumference = 2πr If radius is tripled, then, C' = 2π(3r) = 6πr = 3 * 2πr = 3 * C So, Circumference will also get increased to it's triple value 2) We know, Area = πr² If radius is doubled, π(2r)² = 4π² So, Area will increase 4 times to it's intial value Hope this helps!