A circle has a radius of 3 feet. What is the circumference of a bigger circle if the scale factor of the smaller to bigger is 4:

Question

Naddika [18.5K]

3 years ago

8

A circle has a radius of 3 feet. What is the circumference of a bigger circle if the scale factor of the smaller to bigger is 4:

7?

Mathematics

1 answer:

Vaselesa [24] · Answer 1 · 2022-01-20T22:17:04+03:00

Vaselesa [24]3 years ago

7 0

Big/small=4/7

r1/r2=4/7 where r1, r2 are radius of a big and small circles respectively

r1/3=4/7

r1=12/7

circumference of a big circle is2πr1=2π*12/7=24π/7 cm