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Mathematics 8 Online
OpenStudy (anonymous):

Ahhhh! Need Math help ASAP!!!!

OpenStudy (anonymous):

what kind math?

OpenStudy (anonymous):

here ill put the question down

OpenStudy (anonymous):

The base area of a prism is 120 square feet. Its height is 5 feet. What is the volume of the prism?

OpenStudy (anonymous):

ooh I can help!!

OpenStudy (anonymous):

k, Ive got a couple more questions after this too, if you guys could help me figure out how to solve them

Vocaloid (vocaloid):

hold on a sec

Vocaloid (vocaloid):

ok the volume of a prism is V = l*w*h = b*h, where b is the area of the base and h is the height, does that help?

OpenStudy (anonymous):

a little...im gonna try solving it

OpenStudy (anonymous):

couldnt i do 120*5 and get the answer of 600 square feet. ??

Vocaloid (vocaloid):

@blondie$$$ Yup, you got it!

OpenStudy (anonymous):

Yahh!!!!! Woo HOO!!!!!! k, here comes another one

OpenStudy (anonymous):

What is the capacity of the cube in liters?

Vocaloid (vocaloid):

uh, what cube?

OpenStudy (anonymous):

here, ill try to copy it!

OpenStudy (anonymous):

it isn't pasting, but its got a length of 9 cm, a width or 9 cm, and a height of 9 cm...

Vocaloid (vocaloid):

capacity = volume = l*w*h

OpenStudy (anonymous):

ok, so 9*9*9

Vocaloid (vocaloid):

yea

OpenStudy (anonymous):

k so the answer is 729?! :)

Vocaloid (vocaloid):

yes

OpenStudy (anonymous):

Yaaa!! thanks so much!

OpenStudy (anonymous):

can i ask you something else? i have got an answer but idk if its correct

Vocaloid (vocaloid):

sure

OpenStudy (anonymous):

ok...so the question is What is the volume of the cylinder?

OpenStudy (anonymous):

ok, the cube has a length of 18ft. and a height of 7 ft....i got the answer of 126pi ft. cubed

Vocaloid (vocaloid):

wait what, this problem doesn't make sense if it's a cube, then the length, width, and height should be equal and where are you getting pi from?

OpenStudy (anonymous):

here...ill try to show you... Question 4.4. What is the volume of the cylinder? (Points : 4) 126 ft3 252 ft3 882 ft3 2268 ft3

OpenStudy (anonymous):

thats the question...but in between the numbers and ft there is a pi sign

OpenStudy (anonymous):

can you still help me?

OpenStudy (anonymous):

and its a cylinder

OpenStudy (anonymous):

my bad...i must have said cube...im so sorry

Vocaloid (vocaloid):

volume of a cylinder: pi*r^2*h

OpenStudy (anonymous):

so is the answer 126 in?

Vocaloid (vocaloid):

is the radius 18?

OpenStudy (anonymous):

yes

Vocaloid (vocaloid):

try again, you've almost got it

Vocaloid (vocaloid):

remember the exponent

OpenStudy (anonymous):

oh right...so its going to be 252??

Vocaloid (vocaloid):

nope. V = pi*r^2*h = pi*18*18*7

Vocaloid (vocaloid):

r^2 = r*r

OpenStudy (anonymous):

k so its 2268 right?

Vocaloid (vocaloid):

yea

Vocaloid (vocaloid):

just as a tip, if you ever need the formula for the volume/surface area, you can always look it up on google to save you some time :)

OpenStudy (anonymous):

ok, thanks!!! :)

Vocaloid (vocaloid):

are there any other problems you need help with?

OpenStudy (anonymous):

yes..

OpenStudy (anonymous):

A cone has a base radius of 2 millimeters and a height of 24 millimeters. What is the volume of the cone? 16 mm3 32 mm3 96 mm3 384 mm3

OpenStudy (anonymous):

Ahhhh!! Someone please Help!!!!

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