Can u tell me how 2 work it out as well as the answer. Thanks.
2006-06-20 04:08:03 · 13 answers · asked by comostreet 2 in Education & Reference ➔ Homework Help
Hint, try to work out the radius! Do your homework yourself.
2006-06-20 04:14:12 · answer #1 · answered by ehc11 5 · 2⤊ 2⤋
So many different answers !!!!
The correct answer is 79577.471545947667884441881686257 to 27 decimal places. Sorry couldn't work it out any more specifically than that.
Basically, take 1000, divide by pi, divide by 2, this gives you the radius. Square that and multiply by pi, this gives you the area as above.
2006-06-22 02:45:01 · answer #2 · answered by headcage 3 · 0⤊ 0⤋
Circumference of circle = 2 x pi * r =1000 m (pi = 22/7 = 3.14)
So r (radius) = 1000 / 2 x pi
Area of circle = pi x r square
= pi x (1000/2 x pi)square
= 1000000/4 x 3.14 sq M
= 79617.83 sq M approx
2006-06-20 04:21:13 · answer #3 · answered by catalyst59 2 · 0⤊ 0⤋
Divide the circuference by pi. to give the diameter
ie. 1000 divided by 3.14159 = 318.31015.
Divide the diameter by 2 to give the radius = 318.31015 divided by 2 =
159.155.07 then -
Area of circle = pi x radius squared =
3.14159x (159.15507x159.15507) = 79577.53 sq. metres
Remember it is impossible to work out the area of a circle exactly because pi is an approximation.
2006-06-20 05:18:16 · answer #4 · answered by Veritas 7 · 0⤊ 0⤋
Circumference = 2 pi r
radius = 1000/ 2 pi
= 159.155m
area = pi r^2
area = 79577.472m^2
2006-06-20 04:14:31 · answer #5 · answered by epo1978 3 · 0⤊ 0⤋
The formula for the circumference of a circle is, c = 2pi*r So r = c/2pi. The formula for the realm of a circle is: pi*r^2 so, if we substitute c/2pi in decision to r, we get: pi*(c/2pi)^2. To simplify this we get: pi*c^2/4pi^2. If we now divide proper and bottom through pi we get: c^2/4pi. all of us comprehend that c = 1000m so c^2 = 1000000m^2 so1000000/4pi = 79577.54m^2
2016-11-15 00:40:45 · answer #6 · answered by ? 4 · 0⤊ 0⤋
that means 2 pi r = 1000m
so r = 1000/ 2 pi
= 1000 x 7 / 22 x 2
=3500 / 22
we need area i.e. pi x r x r = 22/7 x 3500/22 x 3500/22 = 7954545.4545
2006-06-20 04:18:13 · answer #7 · answered by rock_yell 2 · 0⤊ 0⤋
circumfrence=2*22/7*r where r=radius of circle we know area of circle=22/7*r*r so frm 1 we calculate r as r=c*7/22*2
r=1000*7/2*22=159
now area=22*159*159/7=79454
2006-06-20 04:25:47 · answer #8 · answered by Anonymous · 0⤊ 0⤋
well firstyou need to know the radius - half of the diameter. Then you square the radius and times by pie.
use a calculator. type in:
r yx 2 x pie. - i cant find the sign for pie on the keyboard!
2006-06-20 04:15:10 · answer #9 · answered by Anonymous · 0⤊ 0⤋
Circumference is pi (3.14) times the diameter.
Area is pi (3.14) times radius (half of diameter) times radius.
1000 m divided by 3.14 = diameter = 318.47 m
radius = diameter divided by 2 = 159.24 m
radius times radius = 159.24m x 159.24 m = 25,356 square metres
25,356 square metres times pi (3.14) = area = 79,618 square metres.
2006-06-20 04:17:26 · answer #10 · answered by philk_ca 5 · 0⤊ 0⤋
Circumference is = Pi * D
Area = Pi * r*r
D = 2 r
1000=Pi * D so D = 318.47
318.47 = 2 r
r = 159.23
Area = Pi * 159.23 * 159.23
Area = 79,617.82
2006-06-20 04:14:18 · answer #11 · answered by K R 3 · 0⤊ 0⤋