Find the volume of the figure below to the nearest cubic centimeter.
A three-dimensional ring resembles a hollow cylinder. The hole has a radius measuring 8 centimeters. The ring has a height measuring 4 centimeters. It is 2 centimeters thick around the hole.
Volume = (2πr^2h) - (2πr^2h')
Volume = (2π(8^2)(4)) - (2π(8^2)(2))
Volume = (2π(64)(4)) - (2π(64)(2))
Volume = (512π) - (128π)
Volume = 384π cm^3
Volume = 1209.6 cm^3 (to the nearest cubic centimeter)
No idea what the bot is doing !!!
Sounds like the radius of the whole thing is 10 cm
volume of solide = π(10^2)(4) - π(8^2)(4)
= 4π(100 - 64) = appr 452.4 cm^3