Question

what is the height of the cylinder. volume=271.4 in^3 , radius = 6 in

Answer 1

HI!!

Answer 2

do
\[\frac{271.4}{36\pi}\]
probably need a calculator

Answer 3

hey. I really need help with some math problems. I think the answer is 7.2?

Answer 4

http://www.wolframalpha.com/input/?i=271.4%2F%2836pi%29
close to \(2.4\) i see

Answer 5

no not \(7.2\)

Answer 6

oh oops I did the math wrong

Answer 7

find the volume of the cylinder in terms of pi. h=6in r=3in

Answer 8

in terms of \(\pi\) lol

Answer 9

Formula...V = (pi) r^2 h

Answer 10

do
\[6\times 9\pi\]

Answer 11

"in terms of \(\pi\)" means just write \(54\pi\)

Answer 12

okay but what is ^3

Answer 13

it is \[V=\pi\times r^2\times h\] in your example \(h=6,r=3\) so \(r^2=3^2=9\)

Answer 14

ohhh thanks. find the volume of the cylider in terms of pi. h=11m r=1.9m

Answer 15

oh you mean what is the cubed doing there? the volume is a cubed unit, so \(54\pi\) cubed, whatever the units are

Answer 16

same as the last one
\[11\times 1.9^2\times \pi\]

Answer 17

they probably want you to compute \(11\times 1.9^2\)

Answer 18

http://www.wolframalpha.com/input/?i=11*1.9%5E2

Answer 19

so is it 75.449?

Answer 20

\[39.71\pi\] is what they are looking for

Answer 21

oh once again I did the math wrong. find the volume of the given prism length=13.1cm width=4.7cm height=8.8cm

Answer 22

no idea, sorry
i don't really know any geometry
you want me to google volume of a prism?

Answer 23

yes any help is needed

Answer 24

if it is a rectangular prism, aka a box, multiply
\[13.1\times 4.7\times 8.8\]

Answer 25

http://www.wolframalpha.com/input/?i=13.1*4.7*8.8

Answer 26

541.8?

Answer 27

looks like you "did the math" right this time

Answer 28

thanks

Answer 29

\[\color\magenta\heartsuit\]

Answer 30

what are the lateral area and the surface area of the cone. r=12ft l=21ft

Answer 31

lateral area is \(\pi\times 12\times 21\)

Answer 32

and surface area?

Answer 33

googled it, got
\[\pi r^2+\pi\times r\times l\]

Answer 34

so if google is right
\[\pi \times 12^2+\pi \times 12\times 21\]

Answer 35

2,598.8?

Answer 36

which i guess you could write as
\[396\pi\]

Answer 37

if you are supposed to answer "in terms of \(\pi\)

Answer 38

this one isn't in terms of pi. so its 1,244 right?

Answer 39

yeah

Answer 40

thanks. can you help with 5 more?

Answer 41

quickly maybe
mayweather fight is coming on soon

Answer 42

hahaha who r u cheering for?

Answer 43

mayweather i guess
he will win anyways i think

Answer 44

lets see if we can do a couple more quick like

Answer 45

find the SA of the cylinder r=12in l=17in

Answer 46

this can be the last one

Answer 47

\[2\pi rh +2\pi r^2\]

Answer 48

\[2\pi \times 12\times 17+2\pi \times 144\]

Answer 49

with or without \(\pi\)?

Answer 50

without

Answer 51

http://www.wolframalpha.com/input/?i=2*pi*17*12%2B288*pi

Answer 52

2186.5 looks like

Answer 53

we can do one moreq

Answer 54

thanks okay

Answer 55

what are the lateral area and surface area of the box to the nearest whole number? use the large 17cm x 5 cm rectangles on the top and bottom of the bases. l= 17 w= 5 h=3.12

Answer 56

lateral area \[(2l+2w)h\]

Answer 57

\[(2\times 17+2\times 5)\times 3.12\]

Answer 58

http://www.wolframalpha.com/input/?i=%282*17%2B10%293.2
141 to the nearest whole number

Answer 59

surface area
\[2(17\times 5+5\times 3.2+3.2\times 17)

Answer 60

\[2(17\times 5+5\times 3.2+3.2\times 17)\]

Answer 61

thanks

Answer 62

yw good luck
\[\color\magenta\heartsuit\]