If the circumference of the circle is 20 cm. What is the radius
What is the diameter
What is the area

Explanation:

radius. r = 3.18309886 cm

diameter. d = 6.36619772 cm

circumference. C = 20 cm

area. A = 31.8309886 

radius: r = C/2π

diameter: D = C/π

area: A = C²/4π

or

area: A = πr²

well this is going to be a long answer lol ok so the visigoths were a branch of the goths who frequently raided rome, uh the hunas attacked the guptas a lot and weakened them, uuhm of course the romans used math and science in there every day lives i mean they had a whole empire to run, and rome was split into east and west by a general named diocletian. hope this you! : )