a large shampoo is 20 cm tall & in cylinder shape(what radius should the bottle have if it must hold 240 milliliters

Question

anonymous · Answer

Do you know the equation you will use for the volume of a cylinder?

anonymous · Answer

Height is 20 cm
Volume is 240 ml

Volume of a cylinder is Pi(r)^2*h

anonymous · Answer

i know but im having trouble solving can u show me by steps please

anonymous · Answer

V = 2Pi * r^2 * h

you know V and h, 2Pi is just a constant (about 6.28) so plug in the values for V and h to get r

anonymous · Answer

one thing to note is that you need to convert your units of volume to cm^3 first

anonymous · Answer

ok because u multiplied 3.14 x 2 right

anonymous · Answer

how do i convert my units

anonymous · Answer

you have to find out how many mililiters are in a centimeter first

anonymous · Answer

so 1cm=10mm

anonymous · Answer

now what

anonymous · Answer

1cm^3 = 1mL  (milliliters not millimeters which are units of distance)

therefore 240mL = 240cm^3

anonymous · Answer

now you have everything, just solve for r!

anonymous · Answer

ok. thank :)