Question

Find the circumference of a circle with radius 4 m. Use a = 3.14.??

Answer 1

4 x 2 x 3.14 = 25.12

Explanation:

Formula of circumference:

2(just use this number whenever finding circumference) x pi(3.14 or 22/7 depending on what they tell you to use for pi) x radius(half of your diameter or your given radius).

2πr

Answer 2

area of a circle = pi*r^2
r=4m
plug in: 3.14*(4)^2
= 3.14(16)
=50.24 m