Class 9 Heron’s Formula Quiz Set 2 1. The sides of a triangle are in the ratio 12 : 17 : 25 and its perimeter is 540cm. The area is: 1000 sq.cm. 5000 sq.cm. 9000 sq.cm. 3000 sq.cm. 2. The perimeter of a triangle is 60cm. If its sides are in the ratio 1:3:2, then its smallest side is none 15 5 10 3. The area of ΔABC is: 4√5 cm² 20 cm² 10 cm² 2√5 cm² 4. Each sides of an equilateral triangle measure 8 cm. The area of the triangle is 32√3 cm² 8√3 cm² 16√3 cm² 48 cm² 5. The area of the quadrilateral ABCD in the adjoining figure is: 17.8 cm² 15.2 cm² 14.6 cm² 18.3 cm² 6. The area of the quadrilateral ABCD in the adjoining figure is: 101 cm² 90 cm² 96 cm² 114 cm² 7. The area of trapezium in the adjoining figure is: 256 cm² 396 cm² 306 cm² 245 cm² 8. Find the area of a right triangle whose sides containing the right angle are 5cm and 6cm 20 sq cm none 30 sq cm 15 sq cm 9. The equal sides of isosceles triangle are 12 cm and perimeter is 30 cm. The area of this triangle is: 9√15 sq.cm √15 sq.cm. 6√15 sq.cm 3√15 sq.cm 10. The area of an equilateral triangle is 16 m². Its perimeter is 36 cm 12 m 24 m 48 m 11. If the perimeter of a rhombus is 20cm and one of the diagonals is 8cm. The area of the rhombus is 24 sq cm 48 sq cm 56 sq cm none 12. The sides of a triangle are in the ratio of 3 : 4 : 5. If its perimeter is 36 cm, then what is its area? 48 cm² 32 cm² 67 cm² 54 cm² 13. The lengths of a triangle are 6 cm, 8 cm and 10 cm. Then the length of perpendicular from the opposite vertex to the side whose length is 8cm is: 4 cm 5 cm 8 cm 6 cm 14. In a right triangle , < B = 90º, AC = 5cm and BC = 4cm. find AB. 2 cm 3 cm 5 cm 6 cm 15. What in the area of an equilateral triangle with side 2 cm? √8cm² 4 cm² √6cm² √3cm² Loading …

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