Question

Find the missing measure for a right circular cone given the following information.

Find h if r = 5 and V = 100.

a)4
b)12
c)30

Answer 1

V = (pi*r^2*h)/3

100 = (pi*5^2*h)/3

3*100 = pi*5^2*h

300 = 3.14*25*h

Can you take it from here?

Answer 2

So what am I multiplying? 3.14*25?

Answer 3

yes

Answer 4

which gives you what?

Answer 5

78.5

Answer 6

Just remember your algebra. How do you solve an equation with 1 variable?

Answer 7

good

Answer 8

so

300 = 3.14*25*h

becomes

300 = 78.5*h

Answer 9

\[\LARGE{\color{red}{h=\frac{300}{78.5}}}\]

Answer 10

How is h , 300/78.5?

Answer 11

Look at the equation again. How do you solve for h?

Answer 12

you start with

300 = 78.5*h

and you divide both sides by 78.5 to get

300/78.5 = h

Answer 13

Figured it out, thanks guys!:)

Answer 14

what is the answer? A, B, or C?