By Pythagoras theorem, leg semicircles sum to the hypotenuse semicircle: Semicircle(a) + Semicircle(b) = Semicircle(c). Subtracting the two unshaded circular segments from both sides shows that the lunes’ area Area(A) + Area(B) equals the triangle’s area Area(C).
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Radius OA is perpendicular to tangent BC, bisecting it into segments of length l/2. In right-angled triangle OAB, R² – r² = (l/2)² = l²/4. The ring area is pi(R² – r²) = (1/4)pi l².
Semicircles have diameter 2, radius 1. Perimeter consists of 4 full semicircular arcs totaling 4 x (pi x 1) = 4pi units. Flower area equals 4 semicircles minus the square: 2pi – 4 units².
The poet compares music to a ‘needed friend’ because it offers unconditional solace, comfort and faithful companionship when human beings feel completely isolated or neglected.
Music moves the poet to her core because its rhythm creates a profound emotional resonance within her soul. Rather than remaining a superficial sound, melody touches her deepest feelings, transforming her mood and perspective entirely.