Question

the ratio of radii of two circles is 8:9.find the ratio of their circumference and also find the ratio of their areas.

Answer 1

As we know their ratio is 8 : 9 so the ratio will not change it will be constant for all the problems

Answer 2

the ratio of their circumference will be 8:9 as formula is 2πr
area ratio will be 64 is to 81 as formula is πrsq