Class 9 Heron’s Formula Quiz Set 2

1. The perimeter of a triangle is 60cm. If its sides are in the ratio 1:3:2, then its smallest side is

 
 
 
 

2. The area of the quadrilateral ABCD in the adjoining figure is:

 
 
 
 

3. The equal sides of isosceles triangle are 12 cm and perimeter is 30 cm. The area of this triangle is:

 
 
 
 

4. In a right triangle , < B = 90º, AC = 5cm and BC = 4cm. find AB.

 
 
 
 

5. Find the area of a right triangle whose sides containing the right angle are 5cm and 6cm

 
 
 
 

6. The area of an equilateral triangle is 16 m². Its perimeter is

 
 
 
 

7. The sides of a triangle are in the ratio of 3 : 4 : 5. If its perimeter is 36 cm, then what is its area?

 
 
 
 

8. 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:

 
 
 
 

9. The area of ΔABC is:

 
 
 
 

10. The area of the quadrilateral ABCD in the adjoining figure is:

 
 
 
 

11. What in the area of an equilateral triangle with side 2 cm?

 
 
 
 

12. The area of trapezium in the adjoining figure is:

 
 
 
 

13. If the perimeter of a rhombus is 20cm and one of the diagonals is 8cm. The area of the rhombus is

 
 
 
 

14. The sides of a triangle are in the ratio 12 : 17 : 25 and its perimeter is 540cm. The area is:

 
 
 
 

15. Each sides of an equilateral triangle measure 8 cm. The area of the triangle is

 
 
 
 

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