Find the circumference and area of a circle with the radius 7 meters. Use 22/7 for pi?
2007-11-24 13:23:42 · 7 answers · asked by Queen D 1 in Education & Reference ➔ Homework Help
Circumference= 2 x pi x r
c= 2 x 22/7 x 7
c= 308/7
c= 44m
Area= pi x r^2
a= 22/7 x 7^2
a= 22/7 x 49
a= 1078/7
a= 154 m^2
2007-11-24 13:30:20 · answer #1 · answered by superfergalicious 5 · 0⤊ 0⤋
Since the circumference is 2 x pi x R, we can do some substituting to get:
2 x 22/7 x 7 meters
The 7 in the numerator and denominator cancel each other out, leaving us with 2 x 22 = 44 meters
2007-11-24 13:28:15 · answer #2 · answered by MICHAEL R 7 · 0⤊ 0⤋
C=pi*d
d=14 (because 7 is the radius)
so C=(22/7)(14)
A=pi*r^2
A=(22/7)(7^2)
(^2 means squared)
2007-11-24 13:30:32 · answer #3 · answered by CaliGurl♥ 6 · 0⤊ 0⤋
circumference
C = 2 pi r or dr
Area of circle
A = pi r2(square)
hence C=2 x (22/7) x 7 = Figure it out from here
and A = (22/7) x (49) = Figure it out from here
I have basically solved the problem for you and the rest is upto you
2007-11-24 13:35:21 · answer #4 · answered by andyk 1 · 0⤊ 0⤋
2(22/7)(3.5)= Circumference
(22/7)(3.5)^2=Area
2007-11-24 13:27:44 · answer #5 · answered by hawksup2 3 · 0⤊ 0⤋
not there yet
2007-11-24 13:26:02 · answer #6 · answered by Anonymous · 0⤊ 0⤋
no effense
but wut nerds!
jk
2007-11-24 13:27:28 · answer #7 · answered by Anonymous · 0⤊ 0⤋