Answer:
7 : 8
Step-by-step explanation:
Given 2 similar figures with circumference ratio a : b
Then the ratio of the corresponding areas = a² : b²
Here the ratio of areas = 49 : 64
Taking the square root of both gives ratio of circumference
ratio of circumference = [tex]\sqrt{49}[/tex] : [tex]\sqrt{64}[/tex] = 7 : 8