Question

a spherical fish bowl has a radious of 21cm. how many ml of water is needed to fill half the bowl?

Answer 1

10.5 this might be it but I am not sure

Answer 2

sorry its 42

Answer 3

r u sure

Answer 4

its 42

Answer 5

no not really

Answer 6

was I right

Answer 7

pls give a correct ans.........

Answer 8

whats ans.......

Answer 9

one of those are the answer

Answer 10

where

Answer 11

10.5 or 42

Answer 12

So you need to find volume of half of spherical fish bowl.

You have formula for volume of sphere: \(V = \dfrac{4}{3}\pi r^3\)

So half of sphere would be \(V = \dfrac{\dfrac{4}{3}\pi r^3}{2} = \dfrac{4}{6}\pi r^3=\underline{\underline{\underline{\dfrac{2}{3}\pi r^3}}}\)


You have \(r=21~cm\).

Plug it in half-sphere formula:
\(V = \dfrac{2}{3}\pi (21)^3 = \cdots~? ~cm^3\)

\(ml\) is same as \(cm^3\).

So what is \(\dfrac{2}{3}\pi(21)^3\) ? You need to figure that out by yourself.