Area of Polygons MCQs 10 min Score: 0 Attempted: 0/10 Subscribe 1. A seven-sided figure is called: (A) Square (B) Octagon (C) Heptagon (D) Pentagon 2. If ‘a’ is the side of a polygon of n sides, then its area is: (A) (n a² / 4) cot(180°/n) (B) (n a² / 3) (180°/n) (C) (n a² / 2) sin(360°/n) (D) None of these 3. Area of a regular polygon of n sides whose radius of circumscribed circle is “R” is: (A) (nR² / 2) sin(360°/n) (B) (nR² / n) sin(360°/n) (C) (R² / 2) cot(180°/n) (D) None of these 4. Decagon have number of sides: (A) 8 (B) 9 (C) 10 (D) 12 5. Area of a regular hexagon of side “a” is: (A) a² / 4 (B) 2√2 a² (C) (3√3 / 2) a² (D) 2√3 a² 6. The perimeter of a regular hexagon is 12 cm, its area is: (A) 10.932 sq. cm (B) 10.392 sq. cm (C) 10.239 sq. cm (D) 10.329 sq. cm 7. Each angle of an octagon is: (A) 60° (B) 120° (C) 135° (D) 150° 8. Area of regular octagon of side “a” is: (A) 4.2884 a² (B) 4.24884 a² (C) 4.8284 a² (D) 4.1884 a² 9. A regular polygon having infinite number of sides is called: (A) Octagon (B) Hexagon (C) Circle (D) Heptagon 10. Area of regular hexagon circumscribed about a circle of radius 2 cm is: (A) 24√3 (B) 20√3 (C) 36√3 (D) 2√3
