can someone help me with my geometry work? its a page in my text book i have to do and ive been stuck on it for a week!

Question

anonymous · Answer

attachment

anonymous · Answer

if anyone could even just help with activity 1 for now thatd be great

anonymous · Answer

(i also don't need to draw the graphs for activity 2&3)

hero · Answer

According to the text, for any given category, to find its central angle measure, you take the given percentage and multiply it by 360. 

For example, the participants in the survey spent 31% of their time sleeping. 


To find the central angle that corresponds with Sleep perform this calculation:

$$\frac{31}{100} \times 360$$

anonymous · Answer

okay, so the answer for sleep would be 111.6 ? @Hero

hero · Answer

Actually, that appears to be correct. Let me double-check.

hero · Answer

Very good, so just follow suit with the rest of the other categories and calculate their central angles.

anonymous · Answer

okay, that's actually super easy haha!

hero · Answer

Just to be thorough, make sure you include the degree symbol since angles are expressed in degrees:

$$111.6^{\circ}$$

anonymous · Answer

should i do that for all of them ?

hero · Answer

Try doing the next one and see what you get.

anonymous · Answer

also, when im finding the central angle for activity 2 & 3, i still multiply by 360?

anonymous · Answer

and i got 32.4

hero · Answer

The approaches for Activity 1 and 2 are similar as far as calculating the central angle. For activity 3, looks like you might need to do a bit more work to find the actual percentages first before calculating the central angle.

anonymous · Answer

@hero, okay, so i finished activity one and two, and now im confused on how i turn the numbers into percent's?

anonymous · Answer

cause i don't have like a second number to compare, i don't think?

anonymous · Answer

or do i just multiply it by 100? IM SO CONFUSED

nikato · Answer

Haha. I like your nail. Random?

To calculate percent, the first thing you should do in this problem is to find the whole, which you can find by adding all the numbers

anonymous · Answer

thanks haha! and the whole is 9,000 @nikato

nikato · Answer

Ok. And lets say you want to find percent of rock.
So it'll just be

(3150/9000) x100=your percent

anonymous · Answer

thank you so much omg!!!!

nikato · Answer

no problem. do the same with the others. just change the first number, the sales(dollars)number