urgent help needed from math geeks

[Ilya]

the answer to this is 30.095057623, but how do you get that?

thanks a lot.. need this by tomorrow night please

[iKillburger]

calculate the area of the 2 archs. subtract 1 triangle

Area of triangle = sqrt(3)/4 *7^2
Area of 1 arch = pi * r^2 * 60/360

[Aquatiq]

2[((pi*7^2)/6-((7^2)*sqrt(3)/4)) - (7^2*sqrt(3)/4)]

is wrong

but you get the point v

[genocidal]

Find the area of the triangle first:

Use Pythagereon (a^2+b^2=c^2) to get the height of triangle as 6.062. 1/2 (6.062)(7)=21.22 which is the area of the triangle.

Now all you need to do is find the area of the two arcs and add it to 21.22:

The angles are all 60 degrees, meaning the arc ABC (in other words just one of the pie slices) is 1/6 of a full circle. Find the area of the full circle which turns out to be pi*r^2 which is 49*pi. Take 1/6 of the area of the full circle (that's how big the pie piece is) and you get 25.66=area of pie slice.

You only need the lip so go ahead and subtract the area of of the triangle to get 4.44 (25.66-21.22). Then multiply that by two because you have two lips and you get 8.22.

Add the area of the two lips (8.22) to the area of the triangle (21.22) and you get 30.1. Use your calculator and don't round like I did to get more exact numbers.

[Epinephrine]

Hint, radius of circle = pi x r^2 = 3.1415 x 7^2 in this instance. then look at area of the triangle...

There's 6 triangles in the big circle, so after that it's just a matter of subtracting and adding pieces.

Pretty easy question.

[genocidal]

Don't read what the people above me wrote.

[iKillburger]

Don't read what the people above me wrote.

my calculator says
2*pi*7*7*60/360 - 7*7*sqrt(3)/4 = 30.09505762
is correct

[Ilya]

thanks guys, all of you.. that helped

got it

[Scurvy]

while you guys are at it, i have a 6 page paper to do by tomorrow....any takers?

[genocidal]

I got a 21 page one, want to trade?

[Scurvy]

fuck off gen. i didnt ask for tradsies. i want somebody to DO it. jesus christ can't you read

[D1st0rt]

Here's the needlessly overcomplicated way to calculate it:

[Jerome Scuggs]

listen to slint

[Jeenyuss]

listen to slint

can you please be apart of my life again

[genocidal]

Here's the needlessly overcomplicated way to calculate it:

It's clear that it's a trig problem, not calc. Though calc often makes much of all math done before it much easier it isn't particularly helpful for one either not familiar with calc or interested in the spatial representation (made clear by the picture). We can all see your guns, D1st0rt.