Is this correct???

The volume of a cone is 300 cubic kilometers. If the radius of the base is 9 kilometers, what is the height of the cone? Use 3.14 for TT. Show your work and round to the nearest tenth.

my answer --- V = πr^2h
300 km^3 = 3.14(7 km)^2 h
1.949824516... = h

The height is approximately 1.9 km.

DID I DO IT RIGHT? lol

Question

Is this correct???

The volume of a cone is 300 cubic kilometers. If the radius of the base is 9 kilometers, what is the height of the cone? Use 3.14 for TT. Show your work and round to the nearest tenth.

my answer ---> V = πr^2h
300 km^3 = 3.14(7 km)^2 h
1.949824516... = h

The height is approximately 1.9 km.

DID I DO IT RIGHT? lol

jim_thompson5910 · Answer

You are very very close

jim_thompson5910 · Answer

The volume of a cone is really 


V = (pi*r^2*h)/3

jim_thompson5910 · Answer

So this means

V = (pi*r^2*h)/3

300 = (pi*9^2*h)/3

300 = (3.14*81*h)/3

300 = (254.34h)/3

300*3 = 254.34h

900 = 254.34h

900/254.34 = h

3.53857 = h

h = 3.53857 km

gabylovesyou · Answer

so the height would be approximately 3.5 km

jim_thompson5910 · Answer

yes, if you're rounding to the nearest tenth

jim_thompson5910 · Answer

which I just now saw as part of the instructions lol

gabylovesyou · Answer

ohhh ok!

jim_thompson5910 · Answer

so yes, you have it

gabylovesyou · Answer

Thank you soo much!

jim_thompson5910 · Answer

you're welcome