a tree circumference is 15.7 inches. the tree diagram grows at a rate of 2 inches per year. what will circumference be after 10 years

Question

a tree circumference is 15.7 inches. the tree diagram grows at a rate of 2 inches per year. what will circumference be after 10 years

Answer 1

Circumference = PI*r^2. Find the radius r, double it to find the current diameter. Add 20 to the current diameter, divide by 2 to find the radius. Calculate the new circumference.

Answer 2

Tree DIAGRAM grows at a rate of 2"/yr??