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Mathematics 21 Online
OpenStudy (osanseviero):

Problem. You have an equilateral triangle (side l) with 3 circles inside of r=1. I need to calculate the area of the triangle (without the circle area)

OpenStudy (osanseviero):

OpenStudy (madhu.mukherjee.946):

find the area of the circle

OpenStudy (madhu.mukherjee.946):

what do you get?

OpenStudy (osanseviero):

pi*r^2

OpenStudy (madhu.mukherjee.946):

so whats the area of the circle putting the radius

OpenStudy (osanseviero):

pi

OpenStudy (madhu.mukherjee.946):

so whats the area for 3 circles

OpenStudy (osanseviero):

A = 3pi

OpenStudy (madhu.mukherjee.946):

now find the area of the equilatral triangle as a whole,whats that

OpenStudy (madhu.mukherjee.946):

do you know the formula to find the area of equi triangle

OpenStudy (madhu.mukherjee.946):

@osanseviero

OpenStudy (osanseviero):

I'm working to get the formula, almost there

OpenStudy (madhu.mukherjee.946):

this is the formula

OpenStudy (madhu.mukherjee.946):

A=root3/4a^2

OpenStudy (madhu.mukherjee.946):

@osanseviero now you got it?

OpenStudy (osanseviero):

So sqrt(3)*l^2 / 4

OpenStudy (osanseviero):

Just got it :)

OpenStudy (madhu.mukherjee.946):

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