Question

A circle has a diameter of 6 millimeters. What are the circumference and area of the circle? Use three point one four for pi. Round to the nearest tenth. i just need this to be explained?

eighteen point eight millimeters; twenty-eight point three square millimeters

nine point four millimeters; one hundred thirteen point zero square millimeters

eighteen point eight millimeters; one hundred thirteen point zero square millimeters

nine point four millimeters; twenty-eight point three square millimeters

Answer 1

D = 6 mm
r = 3 mm
Area = 3.14 x r^2
Circumference = 2 x 3.14 x r

Answer 2

since the diameter is equal to 2r we divide D by 2 to get r hence
D = 6 mm
divide it by 2
r = 3 mm

Answer 3

ok thank you so multiply using that formula?

Answer 4

yep
A = 3.14 x (3)^2
C = 2 x 3.14 x 3

Answer 5

compute