Question

Find the volume of a box that has a regular pentagonal base with sides measuring 7.3 inches and height of 15 inches. Round two decimal places. @meowxx

Answer 1

Start off by splitting the pentagonal base into 5 equal triangles.

Answer 2

let us find the area of the pentagonish base
keep in mind that \(\bf \textit{area of a regular polygon}=\cfrac{1}{4}\ ns^2\ cot\left(\frac{180}{n}\right)
\\ \quad \\
n=\textit{number of sides}\qquad s=\textit{length of each side}\)

the volume of the box will be the Base Area * Height

Answer 3

Well, first off you know that each side you also know that the height is 15.

Answer 4

ok

Answer 5

i know now

Answer 6

wait isnt it 7.3?

Answer 7

sorry, i meant 7.3 we also know we are working with a pentagonal prism
Volume of Prism = (5/2)ash = Ah
where
a = apothem length, s = side, h = height.

Answer 8

also apothem =

Answer 9

yeah other ppl thought it was 7.5 and i was just like what??? ..........Now im confused Andrea

Answer 10

earth to @meowxx are you alive?

Answer 11

Sorry, I died. Anyway, find the apothem length using the formula above.

Answer 12

lmao priceless and ok thats gonna take me some time :/

Answer 13

actually, i apologize wrong formula

Answer 14

http://www.wikicalculator.com/formula_calculator/Apothem-length-of-Pentagonal-Prism(given-surface-area,length-of-side-and-height)-132.htm this is the formula

Answer 15

actually, i seriously dont know

Answer 16

lol :(

Answer 17

ill work on the pictures i took later, and then explain them to u in 4th tmw

Answer 18

are you sure youll be able to do everything you took a picture of and then explain it and help me do it tomorrow all in one period? :/

Answer 19

pretty sure i mean you learn it fast

Answer 20

did miss hasselman give you info on the presentation

Answer 21

wait but let me see if theres practice problems for those quizes and stuff and yeah just turn your essay into a pp but ofc not everything

Answer 22

lol we just talking out personal business on openstudy for every1 to see

Answer 23

wow, so you actually have decent grades aside from chem

Answer 24

our***

Answer 25

lol. HAI EVERYONE I JUST POOPED FYI.

Answer 26

Omg lol youll regret that later xD

Answer 27

ppl arent gonna help us cuz theyll think we are strange....

Answer 28

lolol.

Answer 29

are you ready for the list of things you are willing do to?

Answer 30

imma send them privately like normal ppl cuz this is just too much lol