Question

Find the area of the shaded sector. (Let Me Attach The File First) @dumbcow @jdoe0001

Answer 1

HELP ME PLEASE WHEN YOU GET THE CHANCE!!! @jdoe0001 @dumbcow

Answer 2

area of sector = pi*r^2 * angle/360

Answer 3

okay @dumbcow the answer I got was 40 pi which is equal to 125.6637061 now how do round that to 2 decimal places

Answer 4

@phi can you help me out please when you get the chance and time

Answer 5

the area of the red sector?

Answer 6

Right!!!

Answer 7

the picture seems to show the gray sector has a central angle of 100º
and you found that area

Answer 8

yes 40pi is correct if angle of sector is 100 degrees
diagram is not even close to being drawn to scale :)

Answer 9

okay so now how do I round that answer to 2 decimal places @dumbcow @phi

Answer 10

so you might want to re-do this and find the area for the red sector (which has a central angle of 260º)

but in the mean-time, to round to the nearest 2 decimal places
look at
125.6637061

look at the *third* place to the right of the decimal point (the 3 in .663)
if the number is 5 or bigger round the 6 up. 3 is not 5 or bigger, so just write 66
and you get
125.66

Answer 11

because i just tried 125.66 and it was wrong could you guys please help me understand

Answer 12

how to round?
if next digit is 5 or greater, then bump up the digit

Answer 13

if 125.66 was wrong, that probably means they want the area of the red sector, which has a central angle of 260º

Answer 14

I just told you that the red sector is what my program wanted me to get the area of already

Answer 15

yes, and it looks like the *angle* of the red sector is NOT 100º (the 100 goes with the gray sector)

so you should do
area of the circle * 260/360

Answer 16

no that's not right either or as my program said "Keep Trying"

Answer 17

what number did you try?

Answer 18

i did what @dumbcow told with the formula and then did 100/360 (wrong answer) and then i did 260/360 and still got a wrong answer so what's really going on @phi

Answer 19

yes, but what decimal number did you type in for the answer?

Answer 20

for dumbcow's help i got 125.6637061 and for your help i got 326.725636 @phi

Answer 21

yes, but what did you type in? you have to round to 2 decimal places.

Answer 22

for dumbcow's help i put in 125.66 as the first answer (WRONG) and for your help i put in 326.73

Answer 23

@phi

Answer 24

Can you take a screen shot of the entire question, along with any instructions?

Answer 25

well I already attached the file that went with this question

Answer 26

yes, but there must be some detail that you are leaving out. Your best hope is to take a screen shot of the instructions and the question and post it.

Answer 27

I know how to attach the file but now how do i take a screenshot

Answer 28

what operating system/computer are you using ?

Answer 29

Here is how to do it on windows
http://www.wikihow.com/Take-a-Screenshot-in-Microsoft-Windows

Answer 30

You can't just go with the attached file @phi because I'm using a library computer

Answer 31

the only other thing I can think of is they told you to use pi= 3.14
if so, we will get slightly different answers.

Answer 32

yeah they told me to do that

Answer 33

no that's wrong too @phi and now i can't go back to that question it's a new question

Answer 34

**3.14*144*26/36
pi r^2

sorry!

Answer 35

but i can't answer that question on my program anymore

Answer 36

it's a new question now

Answer 37

Let's try another. (and figure this thing out)

Answer 38

ok