a = 120+121 = 241 (both are radii)
b = 120 (congruent triangles)
(120+c)^2 + 120^2 = 241^2 (pythagoras), c = 89
Area of square = d^2 = 120^2 + 89^2 = 22321
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a = 120+121 = 241 (both are radii)
b = 120 (congruent triangles)
(120+c)^2 + 120^2 = 241^2 (pythagoras), c = 89
Area of square = d^2 = 120^2 + 89^2 = 22321