Question

*What is the volume of a cylinder with radius 2r cm and height 3h cm?*

1️⃣ r^2h cubic cm
2️⃣ 12r^ h cubic cm
3️⃣ 12r^ 3h cubic cm
4️⃣ 12r^ h cm​

Answer 1

Answer:

$volume \ = \pi \: r { }^{2} h$

$v = \pi \: {(2r)}^{2} (3h) \\ v = \pi \: 4 {r \: }^{2} 3h \\ v = 12\pi {r}^{2} \: h \: cubic \: cm$