Question

Ally is wearing a witch’s costume for Halloween. Her hat is in the shape of a cone with a diameter of 7 inches and a height of 18 inches. What is the volume of Ally’s hat?

924 in3

180 in3

231 in3

693 in3

Answer 1

I had to look this one up: Volume of a cone as a function of radius and height is\[V(r,t)=\frac{pi r^2 h}{3}\]It would seem your radius is about 7/2 and height eighteen. You should be able to get a pretty good approximation.....

Answer 2

so 7/2*18?

Answer 3

Did you look at the formula?

Answer 4

well what is pir o.o?

Answer 5

pie*3.5*18/3?

Answer 6

Having problem with the graphics program a little....

pi is about 22/7, the ratio between a circle's circumference and diameter.
r is the radius, in the case of this problem, 7/2. We will need to square it.
h is the height of the cone. In this problem, it is eighteen.

Answer 7

ohhh pie and r...

Answer 8

[22/7\times7/2^{2}\times18\div3=213 :D thank you\]

Answer 9

I get closer to 230....

Answer 10

sorry ment 231

Answer 11

[22/7\times7/2^{2}\times18\div3=231 :D thank you\]