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Class 9 Maths Chapter 12 Heron'S Formula Quiz 2 (25 MCQs)

Quiz Instructions

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1. Find the cost of laying grass in a triangular field of sides 50 m, 65 m and 65 m at the rate of Rs 7 per m square.
2. The area of an isosceles triangle having base 2 cm and the length of one of the equal sides 4 cm, is
3. What is the purpose of Heron's formula?
4. The perimeter of an equilateral triangle is 60 m. The area is
5. A park, in the shape of a quadrilateral ABCD, hasAngle C = 90$^\circ$, AB = 9 m, BC = 12 m, CD = 5 m and AD = 8 m. How much area does it occupy?
6. The edge of a triangular boards are 6cm, 8cm, 10cm.Find the area of the board
7. Find the area of a triangle two sides of which are 51, 38and the perimeter is 134 ( Use Heron's Formula )
8. The sides of a triangle are in the ratio of 3:5:7 and its perimeter is 300 m. Find the sides.
9. The area of a triangle is 150 $cm^2$
10. The sides of a triangle is 3 cm, 4 cm and 5 cm. Find its area.
11. The perimeter of a triangle is 36 cm. If its sides are in the ratio 1:3:2, then its largest side is
12. The area of equilateral triangle is $36\sqrt{3}cm^2$
13. Find the semi perimeter of the triangle whose sides are 6 cm, 10 cm & 15 cm?
14. In a triangle, s is the semi perimeter and a, b and c are are the measure of sides of triangle such thats-a=15cms-b=21cms-c=16cmThen the parameter of the triangle is
15. The base of a right triangle is 48 cm and its hypotenuse is 50 cm. The area of the triangle is
16. Which option is INCORRECT?Heron's Formula is used to find the area of triangle when
17. 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 cm$^{2}$ is
18. A triangle has sides 9 c m, 11 cm and 16 cmfind the length of its smallest altitude.
19. The area of a triangular board is 200 cm$^{2}$. The cost of painting it at the rate of 9 paise per cm$^{2}$ is
20. How many values must you have to use Heron's formula?
21. The length of each side of an equilateral triangle having an area of 9 $\sqrt[]{3}$
22. The sides of a triangle are 35 cm, 54 cm and 61 cm, respectively. The length of its longest altitude is
23. Area of the triangle is equal to:
24. The lengths of three sides of a triangle is 20 cm, 16 cm and 12 cm. The semi perimeter of the triangle is:
25. Two sides of a triangle are 18cm and 10cm. The perimeter is 42cm. Find the third side.
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