At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
the area of a sector is the same as that of a circle; you just replace the angle measurement... 2pi r^2 ------- = area circle 2 angle r^2 -------- = area any part of a circle 2
1.8pi 6^2 ------- = .9pi(36) = 32.4 pi 2
ack!!...forget the pi part lol
so is the formula wrong then?
dunno; but my inputs are dyslexic... 1.6 (36) ------- = area of sector 2
.8(36) = 28.8
but thats a different answer :( so is 10.8 wrong then??
why are you removing the area of the triangle?
to get the segment area and i looked at the mark scheme and 10.8 is right but theres a segemnt area formula and that doesnt work :(
so teh segment will be the arch looking section of the piece of pie right?
the area of a trianlge is: r^2 sin(angle) ------------ 2
make sure you have your calculator set to radians tho
sin?? isnt area of a traingle BxH/2???
it is; but this isnt the area of a right triangle
the area of any triangle is: base = radial arm = 6 height = radial arm *sin(a) = 6 sin(1.6) and /2 sooo... 36 sin(1.6) --------- = 18 sin(1.6) 2
the area of the tri is abt: 17.99
28.8 -17.99 ------- 10.81
or maybe not..... is 1.2 larger than 90?
1.2 lager than 90??? is this a trick qs?
1.2 * 180 -------- = 68.75 degrees right? pi
yes, but now im lost where did you get these number fomr?
trying to convert radians to degrees; radians normally have a pi in them so you multiply by 180/pi to get the angle.. pi 180 -- * ----- = 90 degrees 2 pi
12 180 --- * ---- = 216/pi = 68.75 10 pi
since the angle is acute; we can assume that our method was correct;
so I get 10.81 whats the answer you get?
then the area of the segment should be 10.8 :)
thank you soo much for explaining this :) if i could i would have wanted to give you some more medals but i can only give you one :S
'sok; you enjoy yourself now :) i got class starting soon
bye bye :)