Question

Need a little Geometry help please. I don't really understand it. The answer I get isn't shown

Answer 1

ok ask away

Answer 2

When I work it out \[V = \frac{ 1 }{ 3 }(10*10)(13) = 433.33\]

Answer 3

what are the awnser choices?

Answer 4

A. 600 ft3
B. 33.3 ft3
C. 1200 ft3
D. 400 ft3

Answer 5

im doing it eright now

Answer 6

Ok, Thank you.

Answer 7

i got D

Answer 8

you find surface area, the area of the 4 triangles, and the square's area

Answer 9

let @iGreen check it though

Answer 10

@iGreen cme check his work im not 100% sure im right

Answer 11

@iGreen

Answer 12

I was thinkig it was B or D so it helped

Answer 13

You want to find the Volume?

Answer 14

the surface area

Answer 15

Find the volume of the square pyramid shown. Round to the nearest tenth if necessary.

Answer 16

Okay

Answer 17

Oh, we can find the height by using the pythagorean theorem.

Answer 18

ya, but this guy is in 6th grade so use small words for him

Answer 19

Ok, Please don't assume I am a guy. I am a female and older then a 6th grader. I am doing home schooling to get my HS diploma and haven't been in school for years.

Answer 20

Lol

Answer 21

oh im sorry about that, just cuz i learned this back in 6th grade

Answer 22

igreen forget the mods just give him the awnser xD

Answer 23

I got 10 from the base of the square pyramid.

Now plug in what we know into the Pythagorean Theorem.

\(a^2 + b^2 = c^2\)

Where 'a' an 'b' are the two legs and 'c' is the hypotenuse.

\(a^2 + 5^2 = 13^2\)

Simplify 5^2 and 13^2, what do you get?

Answer 24

i dont remember it being that complex...back in...6th grade...

Answer 25

Lol, who said this was 6th grade?

Answer 26

@bitesize007 Could you simplify 5^2 and 13^2?

Answer 27

25 and 169

Answer 28

(guys behave zarkon is watching)

Answer 29

Yes, so we have:

\(a^2 + 25 = 169\)

Subtract 25 to both sides, what's 169 - 25?

Answer 30

144 but that's not one of the answers

Answer 31

its not done

Answer 32

yet

Answer 33

^^^^

Answer 34

well brb someone is calling me :)

Answer 35

Yes, so we have:

\(a^2 = 144\)

Find the square root of both sides:

\(a = \sqrt{144}\)

Find the square root of 144

Answer 36

12

Answer 37

Yes, so the height is 12.

Formula for volume of a square pyramid:

\(V = \dfrac{1}{3}bh\)

Plug in what we know:

\(V = \dfrac{1}{3}(10)(12)\)

Simplify

Answer 38

43.3

Answer 39

igreen remains smarter then me :3

Answer 40

No, I got something else, multiply again.

Answer 41

i got 33.3

Answer 42

40

Answer 43

Oh, wait that's base squared..

Answer 44

Multiply 1/3 * 10 * 10 * 12

Answer 45

Well, just multiply 10 * 40

Answer 46

400

Answer 47

wait so D was right :3, cool lol

Answer 48

igreen made me have second thoughts xD

Answer 49

Thank you very much for both of your help.

Answer 50

Yep, that's our answer :P

Answer 51

I actually just found out how to solve this right now..lol.

Answer 52

I guess we learn something new every day.