A circular board has radius 3 m. Painting costs ₹50/m². If 15% is unpainted, what is the total cost?

उत्तर दाखवा आणि स्पष्टीकरण

उत्तर: (B) ₹1202

स्पष्टीकरण

28.27 × 0.85 × 50 ≈ ₹1,202.