Question

Could someone please help me with this question, thank you.​

Answer 1

Answer:

72 cm3

Step-by-step explanation:

Since the cone's height is 12 cm, its radius makes it half of it (i.e 6 cm). Hence

volume of cone = 6 x 12 = 72 cm3

Hope this helps! Thanks for the answer!

Answer 2

Answer:

volume of bogger cone - volume of smaller cone above the bogger one = vol of frustrum

Step-by-step explanation:

vol of cone formula= 1/3*pi*r^2*h

so from the formula,

vol of bigger cone= 1/3*pi*6*6*12 = 36*12*pi/3

given, height of small cone = quarter of bigger one

height of small = 12/4 = 3cm

let radius of small cone = rcm

by similarity you will get r= R/2

r=3cm

vol of small cone =1/3*pi*3*3*3

vol of frustrum = 36*12*pi/3 - 81pi/3

do the calculations and get the answer.