answer to the point with working pls!!
2006-09-13 07:31:26 · 10 answers · asked by mallukutti 2 in Science & Mathematics ➔ Mathematics
....highschool mathematics...hmmmm
2 times the value of pi times the radius gives the circumference.
where radius and circumference must be in the same units.
(2 x pi) x r .........or
....(2pi)r = circumference...and 7 times around THIS circle =
I do know the answer; to give it to U would steal the opportunity from U learning how to arrive at the solution !!
Good Luck !
2006-09-13 07:39:48 · answer #1 · answered by detra_ooh! 2 · 0⤊ 0⤋
Circumference = the diameter times PI
Diameter = 2 x the radius, so
38m x 2 = 76m x 7 = 1670.48m
2006-09-13 14:43:43 · answer #2 · answered by ProfessorOddlot 4 · 0⤊ 0⤋
Radius X Pi X 7= answer
2006-09-13 14:35:31 · answer #3 · answered by ? 6 · 0⤊ 1⤋
The radius is 38m
The diameter is 2 x radius = 76m
The circumfrence is diameter x pie (3.14) = 238.64m
Jill runs around the lake 7 times (7 x circumfrence) = 1670.48m
However, you ask how far HE ran, and Jill is a girl's name.
So the answer is that Jill ran 1670.48m while HE just sat and watched :-)
2006-09-13 14:38:16 · answer #4 · answered by stafflers.t21@btinternet.com 3 · 0⤊ 0⤋
Distance= 7(2pi) (radius)
=7(pi)(38) meters=238.76 meters
2006-09-13 14:37:05 · answer #5 · answered by Amar Soni 7 · 0⤊ 1⤋
Assuming the lake is perfectly circular, then
C = 2pi * r
C = 2pi * 38m
C = 76pi
7(76pi) = 532pi = about 1671.3272917 meters or about 1.67 km
2006-09-13 14:49:24 · answer #6 · answered by Sherman81 6 · 0⤊ 0⤋
I hope this isn't homework...
7*circumference=7*2*pi*r
=7*3*pi*38
=2506.990937564655004293189419857 m
2006-09-13 14:41:07 · answer #7 · answered by shekum 2 · 0⤊ 0⤋
2 x pi x R = circumference
x7=answer
=1671.31524
2006-09-13 14:40:48 · answer #8 · answered by when's my next vacation??? 4 · 0⤊ 0⤋
3.1416 . x 38 m sq. x 7=
2006-09-13 14:41:25 · answer #9 · answered by norsmen 5 · 0⤊ 0⤋
He doesn't run anywhere, Jill does.
2006-09-13 14:39:02 · answer #10 · answered by Missouri LitWit 3 · 1⤊ 0⤋