Mathematics
If sum of the areas of two circles with radii r1 and r2 is equal to the area of circle of radius r, then :
r = r1 + r2
r > r1 + r2
r2 < r12 + r22
r2 = r12 + r22
Mensuration
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Answer
Given,
Sum of the areas of two circles with radii r1 and r2 is equal to the area of circle of radius r.
π(r1)2 + π(r2)2 = πr2
r12 + r22 = r2
Hence, option 4 is the correct option.
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