The small circles are equal in area and the area of the big circle is 25 cm². If the perimeter of the triangle formed by joining the centres of the circle is 22 cm, what is the area of the triangle (in cm²)?
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Step-by-step explanation:
As reasoned by the other responder, the area of big circle is actually 25pi
So R = 5
Sides of triangle are 2r, r+5, r+5
P of triangle = 22 = 4r+10
r = 3
Sides are 6,8,8 say, a,b,c
By Archimedes theorom
16A^2 = 4(ab)^2 - (c^2 -a^2 -b^2)^2
A^2 = 495
A = 3√55
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