Class 9 Heron’s Formula Quiz Set 1

1. A quadrilateral whose sides are 3cm, 4cm, 4cm, 5cm and one of the diagonal is equal to 5cm as per the below figure. The area of the quadrilateral is:

 
 
 
 

2. Each of the two equal sides of an isosceles right triangle is 10 cm long. Its area is

 
 
 
 

3. The base of a right triangle is 48 cm and its hypotenuse is 50 cm. The area of the triangle is

 
 
 
 

4. The base of an isosceles triangle is 6 cm and each of its equal sides is 5 cm. The height of the triangle is

 
 
 
 

5. The perimeter of a right triangle is 60 cm and its hypotenuse is 26 cm. The other two sides of the triangle are

 
 
 
 

6. Area of the triangle is equal to:

 
 
 
 

7. The length of each side of an equilateral triangle having an area of 9√3 cm² is

 
 
 
 

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

 
 
 
 

9. The base of an isosceles triangle is 16 cm and its area is 48 cm². The perimeter of the triangle is

 
 
 
 

10. If the perimeter of an equilateral triangle is 180 cm. Then its area will be:

 
 
 
 

11. The sides of a triangle are 56 cm, 60 cm and 52 cm long. Then the area of the triangle is

 
 
 
 

12. The perimeter of an equilateral triangle is 60 m. The area is:

 
 
 
 

13. The edges of a triangular board are 6 cm, 8 cm and 10 cm. The cost of painting it at the rate of 9 paise per cm² is

 
 
 
 

14. The perimeter of an equilateral triangle is 60 m. The area is

 
 
 
 

15. When the sum of squares of two sides of a triangle is equal to the square of the length of the third side, then it is called a:

 
 
 
 

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