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Find the area of the circle and divide it by 6
Hint: The answer is 9pi/6
Where did you get the 9 and 6 from ?
Find the area of the circle.
i got 4.71
In terms of pi
47.1 ? -__ -
i don't know actually.
Your answer will be cPI, where c is a number.
Remember the area of a circle is pi*r^2
9.42 for cPI and 11309.73 for pi*r^2 ?
For r would i use the degree or the number ?
what does r stand for in the equation for the area of a circle?
Yep so square the radius and then multiply that by pi then divide that by the region of the circle it is which is 1/6
9pi/6 = 4.71
Oh i forgot to ask would it be cm square or cm ?
Also do i always divide by 6 ?
Oh you got 6 by dividing 360 by 60 right
60 degrees is 60/360 = 1/6 of a full revolution (360 degrees) so the area of the sector will be 1/6 of the area of the full circle so that's why you're dividing by 6 (in this case)
Oh okay i think i get it now, can i put another question up and you tell me if i solved it right ?
you basically find the area of the full circle (using A = 2pi*r) then you divide by 6 sure go for it
Hold on do i add square cm or just cm to 4.71 ?
linear units are units like inches, centimeters, etc
they measure distance and length
area units are units like square inches, square centimeters, and so on
so you add on square cm (not just cm)
Thank i was getting confused with that (:
^ that would be 6cm2 or would i just be 6 cm ?
the area is in square meters (given) so the area stays in square meters (unless you convert)
so 6 m^2
find the total area multiply it by 275/360, since you're taking only this fraction of the area (and not the whole thing)
i got 1.31
way too small
No i got that for 275/360 ahahaha
oh, that should be some number less than 1 then
you divided in the wrong order
360/275 = 1.31
is that one right ?
flip the fraction, the 275 should be on top
yep 275/360 = 0.763888 then you take that result and multiply it with the total area of the circle
152.73 would be my answer
a closer approximation is 153.511111111111
the difference is due to round-off error
and the fact that pi is approximate in itself
Oh right the hundredths place is the third right or is it the four i'm really slow today -__ -
it goes tenths hundredths thousandths ten-thousandths ... ... so it's the second digit after the decimal point
Left or right, sorry you must think i lack brain cells.
Ahahaha you answered it, i'm really not getting anything today it's on the right
that's ok, just take things one step at a time
145/360 = 0.40 * 3.14 * 3.7squared
17.2 square cm
you round to 2 places (not 1)
17.3 inches ?
2 decimal places (ie 2 digits after the decimal point)
you should have gotten (145/360)*3.14*3.7^2 = 17.3140472222222 = 17.31
so 17.31 is what they're looking for
Oh you just multiply 3.7 by two i thought i had to multiply it by itself .
3.7^2 means 3.7*3.7
it means 3.7 squared 3.7^2 = 3.7 squared
if i wanted to say "3.7 times 2" then I would write 3.7 * 2
I did it how you said to do it but i got 17.20
maybe you typed it differently
Okay you know how you divide 146 by 360 how many numbers after 0. i'm suppose to use i only use two after 0. example 0.10 get me ?
i think so
so instead of using 0.40277777777778 you can only use 0.40
Then i don't know why i'm getting it wrong, maybe i'm not meant to pass geometry.
what answer is it saying is wrong?
No but i'm not getting what you get so i'm obviously doing something wrong.
well I just typed it all at once
instead of breaking it up
i typed all of (145/360)*3.14*3.7^2 at once
don't forget to round to two places
OH ! i don't do that, how brain dead of me.
Yes i finally got it !!! 17.314
well you want 2 dec places
Which makes it 17.31
I know i was just trying to show you that i finally got it down, thank you so much you basically brought me back from hell and that i will never forget.
geometry isn't hell, so I didn't bring you back from there lol
but I can see how it's tough
Can it be because i'm stressing that i'm not get the things right away ?
that's definitely something that may make you not think straight
so just take things one step at a time and it'll start to click better
Okay have a nice day and your the best j. (: