An Indian tepee is a conical tent. Find the number of cubic feet of air in a teepee 10 ft. in diameter and 12 ft. high.
the answer has to be like this
____pii cu.ft

Question

An Indian tepee is a conical tent. Find the number of cubic feet of air in a teepee 10 ft. in diameter and 12 ft. high. 
the answer has to be like this
____pii cu.ft

shubhamsrg · Answer

use this -> volume of cone = 1/3 pi (radius^2)(height)
just insert values..radius=diameter/2

anonymous · Answer

i tried that.. i got 13 :/

anonymous · Answer

is it 25/3?

anonymous · Answer

answerr me :(

shubhamsrg · Answer

sorry for late reply :
its 1/3(5^2)(12)(pi) = 100pi

anonymous · Answer

really?

anonymous · Answer

howwwwwwwwwwww?

shubhamsrg · Answer

lol..yes..thats the bitter truth :P

anonymous · Answer

wait i did that!

shubhamsrg · Answer

well radius of cone = diameter/2 = 10/2 = 5
and volume = 1/3(pi)(r^2)(h)

anonymous · Answer

then....

shubhamsrg · Answer

just substitute values mam,,r=5,,h=12 ..and you get 100pi

anonymous · Answer

omg i was like multiplyin 25 and 12 thenn dividing it by 3..

shubhamsrg · Answer

yes,,thats what has to be done mam,,you'll get 100 only like this..

anonymous · Answer

thank you very much!

shubhamsrg · Answer

never mind ..glad to help ^^

anonymous · Answer

could  u help me wih this one... please An Indian tepee is a conical tent. Find the number of skins needed to cover a teepee 10 ft. in diameter and 12 ft. high. Each skin covers 15 sq. ft. (use  = 3.14)

shubhamsrg · Answer

well this time it asks you for the curved surface area of the cone..calculate it and divide by 15..you'll get your answer..

anonymous · Answer

so i just have to divide 100 by 15 right??

shubhamsrg · Answer

curved surface area = 2(pi)(r)(l)
where l = (h^2 + r^2)^(1/2)

shubhamsrg · Answer

100 was the volume,,this is a different part,,you need to calculate Curved surface area separately..

anonymous · Answer

ohh ok

anonymous · Answer

is it 408.2

anonymous · Answer

i used surface area = 2(pi)(r)(l)

shubhamsrg · Answer

surface area i guess you have calculated correctly..
was your l= 13 ?

anonymous · Answer

yup:)

anonymous · Answer

you rock! thanks:)

shubhamsrg · Answer

then i guess its correct..just divide by 15 and you get your answer..

shubhamsrg · Answer

hehe..nevermind,, ^_^

anonymous · Answer

is it 27?

shubhamsrg · Answer

approximately yes,,otherwise there is a fraction here and there..

anonymous · Answer

lol okay  c:

shubhamsrg · Answer

to be more precise,,its around 27.213...

anonymous · Answer

oh okay:)

shubhamsrg · Answer

mam am so very sorry :(
CSA = pi(r)(l) and not 2pi(r)(l)

shubhamsrg · Answer

but you dont need to calculate from the starting,,your final answer is juts half of what you got previously..

shubhamsrg · Answer

am really sorry :/