Answer:
a) 2. 4pi (in) , 4pi
3. 8pi , 16pi
4. 16pi, 64pi
5. 32 pi , 256pi
Step-by-step explanation:
b) when radius increase , the areas and circumferences increase to
circumference = 2 pi * radius ; so if you double the radius , circumference will be double
area = pi * radius * radius ; if you double the radius , area will be 2^2 or 4 times
c) circumference will be triple and
area will be 3^2 or 9 times
