it gives me answers like this so i dont under stand i even tried to work these answers out but none of them matched the answer i got witch was1436.75504yd^3 here are the answers it gives me to choose from:
49(pi)yd^2
343(pi)yd^3
343(pi)yd^2
457 1/3 (pi)yd^3
none of the above
i know it cant be any of the squared ones cause it is a sphere and it has to be ^3
2006-06-28 08:47:02 · 8 answers · asked by johnnydeppishot2003 1 in Science & Mathematics ➔ Mathematics
The volume of a sphere with radius r is (4/3)pi * r^3. Your radius is 7yds, so the volume is (4/3) pi (7yd)^3 = (4/3)(343)(pi) yd^3 = 457 1/3 (pi) yd^3
2006-06-28 08:53:22 · answer #1 · answered by Anonymous · 1⤊ 0⤋
V = 4/3 pi r^3
= (4/3) pi (343 yd^3)
= (457 1/3*pi) yd^3
= 1437 yd^3
2006-06-28 08:54:53 · answer #2 · answered by goldnwhite 3 · 0⤊ 0⤋
Volume of sphere = (4/3)*pi*(radius^3)
=(4/3)*pi*((7yd)^3)
=(4/3)*pi*(343yd^3)
=(343*4/3)*pi yd^3
=457 1/3 (pi) yd^3
2006-06-28 15:33:05 · answer #3 · answered by Anonymous · 0⤊ 0⤋
volume of sphere= 4/3.(pi). r^3
= 4/3.(pi). (7yd)^3 { don't put value of pi}
= 4/3 .(pi) . 343 yd^3
= 4.(343).(pi) yd^3 divided by 3
= 1372 . 1/3.(pi). yd^3
so right answer is none of the above.
2006-06-28 09:24:20 · answer #4 · answered by flori 4 · 0⤊ 0⤋
457 1/3 (pi) yd^3 .... 7^3 is 343, so the answer cannot be that as well.
The answer is D
2006-06-28 09:45:52 · answer #5 · answered by icehoundxx 6 · 0⤊ 0⤋
divide the answer you got by pi and use that number as a coefficient for pi, yd^3 is your unit and there you go.
2006-06-28 09:04:47 · answer #6 · answered by Marie W 1 · 0⤊ 0⤋
V = (4 Pi/3)r^3 = (Pi/6)d^3
V = (4pi/3) * 7^3
V = (4pi/3) * 343
V = (1372/3)pi
V = 457 1/3 pi yd^3
the 3rd answer is correct.
2006-06-28 09:58:45 · answer #7 · answered by Sherman81 6 · 0⤊ 0⤋
The last one:
http://mathcentral.uregina.ca/QQ/database/QQ.09.99/partridge1.html
2006-06-28 08:53:25 · answer #8 · answered by rickthewonderalgae 3 · 0⤊ 0⤋