Question

Does anyone know an algebraic expression that gives the area of a circle with a circumference ?

Answer 1

circumfrance = pi * d

Answer 2

area = p * r^2

Answer 3

ok so A= pi*r^2*d ?

Answer 4

no i dont' think that there is one for both. you have to use diff. values for each one

Answer 5

ok thanks!

Answer 6

Area of a circle = Circumference times r /2

C = 2pi(r)
A = (2pi(r))r/2
A= pi(r^2)

Answer 7

Actually the Area of a sector is equal to its degree in radians times the square of the radius divided by 2.

The radian measure of a circle is (2pi).

2pi(r^2)/2 = pi(r^2)

Answer 8

The question for this one says, Enter here an algebraic expression that gives the area of a circle with a circumference .
Hint: The circumference of a circle with radius is , and its area is

Answer 9

Algebraic expressions:

Circumference = 2pi(r)
Area = pi(r^2)

When you know the radius, you can solve :)

Answer 10

isnt the radius 1/2

Answer 11

radius = d/2

Answer 12

the radius depends on the size of the circle. And it is half of the width.

Answer 13

yeah so diameter/ 2