Answer:
Diameter = 8
Step-by-step explanation:
Cone volume formula = (pi)*r^2*h/3
V = (12pi)*r^2*(9/3)
V = (12pi)*r^2*3
12/3 = 4
V =(pi)*4^2*h/3
4*2 = 8
The Diameter is 8
2.2568m
volume= 12 π cm³
or, 1/3 πr²h = 12π cm³
or, πr² × 9 = 12π ×3
or, r²= 36π/9π
or, r²= 4
or, r= 2
d = 2r = 2× 2= 4 cm
c. 1/2
7 out of 14 contestants did last time, which is 1/2 of the contestants. You would assume that the same proportion would qualify when there are 10 contestants, so you would assume that 1/2 of 10 would also qualify for the bonus round.
