This one seemed easy at first but I dont think it's worked out how I think it is

I did 10 divided by 5 then squared the answer

then multiplied 18 by the squared answer to find the second area

then took my first answer and cubed it but then i got stuck since neither of the volumes are given

petri
Oct 4, 2018

#1**+3 **

First find the Radius of smaller cylinder:

pi r^2 = area

r = sqrt( area/pi)

r = sqrt(18/pi) = 2.39365 cm

Now calculate the radius of the larger cylinder (using ratios of similarity)

10/5 (r) = 4.787 cm

Volume = area x height

pi (4.787^2)(10) = 720 cm^3

ElectricPavlov
Oct 4, 2018