Chapter-11 ➤ Perimeter and Area 1. Perimeter of a square = side × side 3 × side 4 × side 2 × side 2. 1 cm² = 10 mm² 100 mm² 1000 mm² 10000 mm² 3. The area of a circle of radius r is 2πr² πr² 2πr 4πr² 4. Area of a triangle = base × height ½ × base × height ⅓ × base × height ¼ × base × height 5. Perimeter of a rectangle of length Z and breadth 6 is l + b 2 × (l + b) 3 × (l + b) l × b 6. If r and d are the radius and diameter of a circle respectively, then d = 2 r d = r d = ½r d = r² 7. Area of a rectangle of length l and breadth b is l × b l + b 2 × (l + b) 6 × (l + b) 8. One of the sides and the corresponding height of a parallelogram are 3 cm and 1 cm respectively. The area of the parallelogram is 1 cm² 3 cm² 6 cm² 12 cm² 9. The area of a rectangular field is 250 m². If the breadth of the field is 10 m, find its length. 25 m 50 m 100 m 125 m 10. A rectangular wire of length 40 cm and breadth 20 cm is bent in the shape of a square. The side of the square is 10 cm 20 cm 30 cm 40 cm Loading … Question 1 of 10
