Question

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

Find h if r = 5 and V = 100.

4
12
30

Answer 1

please what is the formula expressing the volume V of a right circular cone?

Answer 2

do you know it?

Answer 3

@Luka172

Answer 4

i think its V =1/3 pi r^2 h

Answer 5

perfect!

Answer 6

Now, multiply both side of your formula by 3, and subsequently divide your resultant formula by pi*r^2, write your result please!

Answer 7

please, first multiply both sides of the formula above that you have wrote by 3, the write your answer, please!

Answer 8

300=25pi/3 i dont know

Answer 9

I write the first step:
\[3V=\pi*r ^{2}*h\]

Answer 10

now, please divide my formula above by (pi*r^2), please do not substitute your numerical data, we will do it later!

Answer 11

please you have to divide both sides of my ormula by (pir^2)

Answer 12

right side, will become:
\[\frac{ \pi*r ^{2}*h }{ \pi*r ^{2} }=h\]
and left side?...please write your answer

Answer 13

im stupid i dont know can u put it in slow turms

Answer 14

your right side is:
\[\pi*r ^{2}*h\]
now when you divide it by (pi*r^2), it becomes:
\[\frac{ \pi*r^{2}* h}{ \pi*r ^{2} }=h\]

Answer 15

left side will become:
\[\frac{ 3V }{ \pi*r ^{2} }\]

Answer 16

i got that but how do i put the problem in the calculator

Answer 17

so finally yuo got:
\[h=\frac{ 3V }{ \pi*r ^{2} }\]

Answer 18

please insert our numerical data at right side of the above formula, and you wil get your answer Please you cn use this approximation:
\[\pi \approx 3\]

Answer 19

so:\[h=\frac{ 3*100 }{ 3*25 }=4\]

Answer 20

so the first option is the ight answer!

Answer 21

but what about 12

Answer 22

why 12?