i know how to get the circumferance of a cirlce, but i am wondering about how to find the inside area of the circle. my idea is probably multiply the radius of the circle by 180 and then times it by 2, since a cirlce has 360 degrees.
thanks for answering,
2006-12-02 11:59:43 · 10 answers · asked by sammy c 1 in Science & Mathematics ➔ Mathematics
You know circumfrence c = 2*pi*r
You must also know area A = *pi*r^2 (pi r squared)
2006-12-02 12:04:05 · answer #1 · answered by steve_geo1 7 · 0⤊ 0⤋
Area of a circle is pi*r^2 (pi times the Radius squared).
Square the radius of the circle then multiply that times pi
pi =3.14
2006-12-02 20:06:09 · answer #2 · answered by D B 4 · 0⤊ 0⤋
circumference is the distance around the cirlce.
the area of a circle = (pi)(r^2)
2006-12-02 20:05:23 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Area of a circle = pi mutiplied by the radius squared.
Pi = 3.14
Circle Area = 3.14 * radius * radius
2006-12-02 20:04:20 · answer #4 · answered by Anonymous 1 · 0⤊ 0⤋
Area = pi time radius squared
2006-12-02 20:05:28 · answer #5 · answered by Sam E 6 · 0⤊ 0⤋
No, what you do is to multiply the circumference by the radius and divide the result by half.
2006-12-02 20:03:59 · answer #6 · answered by Scythian1950 7 · 0⤊ 0⤋
Area = pi * r^2
2006-12-02 20:02:04 · answer #7 · answered by sep_n 3 · 0⤊ 0⤋
pir2.
That won't come out well. If you know how to get the circumference, it's easy (PI*Radius[squared]).
2006-12-02 20:05:39 · answer #8 · answered by guernsey_donkey2 4 · 0⤊ 0⤋
pi * r (sq)
2006-12-02 20:32:01 · answer #9 · answered by Anonymous · 0⤊ 0⤋
2piaR
2006-12-02 20:03:09 · answer #10 · answered by Anonymous · 0⤊ 0⤋