Answer:
D
Step-by-step explanation:
i think it's correct if not I'm sorry
Circumference of a circle - derivation
This page describes how to derive the formula for the circumference of a circle.
Recall that the definition of pi (π) is the circumference c of any circle divided by its diameter d. Put as an equation, pi is defined as
π
=
c
d
Rearranging this to solve for c we get
c
=
π
d
The diameter of a circle is twice its radius, so substituting 2r for d
c
=
2
π
r
If you know the area
Recall that the area of a circle is given by
area
=
π
r
2
Solving this for r
r
2
=
a
π
So
r
=
√
a
π
The circumference c of a circle is
c
=
2
π
r
The volume of a cone is 1/3 pi r^2 h, so plug this in to get the answer
Answer:
They are equal
Step-by-step explanation:
320 oz is 20 pounds:))
The balance in dollars at the end of 4 years will be $1,462.50
