SEBA Class 9 Mathematics MCQ Chapter 12 Heron’s Formula Question Answer in English Medium, Class 9 General Maths Multiple Choice Question Answer in English to each chapter is provided in the list so that you can easily browse throughout different chapters SEBA Class 9 Mathematics MCQ Chapter 12 Heron’s Formula Notes and select need one.
SEBA Class 9 Mathematics MCQ Chapter 12 Heron’s Formula
Also, you can read the SCERT book online in these sections Solutions by Expert Teachers as per SCERT (CBSE) Book guidelines. These solutions are part of SCERT All Subject Solutions. Here we have given Assam SEBA Class 9 Mathematics MCQ Chapter 12 Heron’s Formula Solutions for All Subject, You can practice these here.
Heron’s Formula
Chapter – 12
| MCQ |
1. The area of a triangle with sides 6 cm, 8 cm, and 10 cm is:
(a) 24 sq. cm
(b) 30 sq. cm
(c) 36 sq. cm
(d) 40 sq. cm
Ans (b) 30 sq. cm
2. Heron’s formula is applicable for which type of triangles?
(a) Equilateral
(b) Isosceles
(c) Scalene
(d) Right-angled
Ans: (c) Scalene
3. What is the semi-perimeter of a triangle with sides 5 cm, 12 cm, and 13 cm?
(a) 12 cm
(b) 15 cm
(c) 16 cm
(d) 20 cm
Ans: (c) 16 cm
4. If the sides of a triangle are 10 cm, 10 cm, and 10 cm, then its area using Heron’s formula will be:
(a) 10√3 sq. cm
(b) 25 sq. cm
(c) 50 sq. cm
(d) 100 sq. cm
Ans: (a) 10√3 sq. cm
5. The length of the perpendicular from the vertex to the base of a triangle with sides 6 cm, 8 cm, and 10 cm is:
(a) 4 cm
(b) 5 cm
(c) 6 cm
(d) 8 cm
Ans: (a) 4 cm
6. If the sides of a triangle are in the ratio 3:4:5, then its area using Heron’s formula will be:
(a) 6 sq. units
(b) 12 sq. units
(c) 24 sq. units
(d) 36 sq. units
Ans: (b) 12 sq. units
7. What is the area of an equilateral triangle with side length 12 cm using Heron’s formula?
(a) 36√3 sq. cm
(b) 72 sq. cm
(c) 144 sq. cm
(d) 216 sq. cm
Ans: (a) 36√3 sq. cm
8. Heron’s formula is named after:
(a) An ancient Greek mathematician.
(b) An Indian mathematician.
(c) A Roman mathematician.
(d) A Chinese mathematician.
Ans: (a) An ancient Greek mathematician.
9. If the sides of a triangle are 7 cm, 24 cm, and 25 cm, then the triangle is:
(a) Acute-angled.
(b) Obtuse-angled.
(c) Right-angled.
(d) Equilateral.
Ans: (c) Right-angled.
10. What is the area of a triangle with sides 9 cm, 12 cm, and 15 cm using Heron’s formula?
(a) 54 sq. cm
(b) 72 sq. cm
(c) 108 sq. cm
(d) 216 sq. cm
Ans: (c) 108 sq. cm
11. If the sides of a triangle are 8 cm, 15 cm, and 17 cm, then its area using Heron’s formula will be:
(a) 60 sq. units
(b) 72 sq. units
(c) 120 sq. units
(d) 144 sq. units
Ans: (b) 72 sq. units
12. If the sides of a triangle are 13 cm, 14 cm, and 15 cm, then the triangle is:
(a) Scalene.
(b) Equilateral.
(c) Isosceles.
(d) Right-angled.
Ans: (d) Right-angled.
13. The perimeter of a triangle with sides 5 cm, 12 cm, and 13 cm is:
(a) 20 cm
(b) 30 cm
(c) 35 cm
(d) 40 cm
Ans: (d) 40 cm
14. What is the area of a triangle with sides 15 cm, 18 cm, and 21 cm using Heron’s formula?
(a) 120 sq. cm
(b) 180 sq. cm
(c) 240 sq. cm
(d) 360 sq. cm
Ans: (c) 240 sq. cm
15.If the sides of a triangle are 10 cm, 15 cm, and 20 cm, then its area using Heron’s formula will be:
(a) 40 sq. units
(b) 60 sq. units
((c) 80 sq. units
(d) 100 sq. units
Ans: (b) 60 sq. units
16. If the sides of a triangle are 9 cm, 10 cm, and 11 cm, then the triangle is:
(a) Scalene
(b) Equilateral
(c) Isosceles
(d) Right-angled
Ans: (a) Scalene
17. If the sides of a triangle are 5 cm, 12 cm, and 13 cm, then its area using Heron’s formula will be:
(a) 30 sq. units
(b) 35 sq. units
(c) 40 sq. units
(d) 45 sq. units
Ans (a) 30 sq. units
18. The length of the altitude of a triangle with sides 6 cm, 8 cm, and 10 cm using Heron’s formula is:
(a) 3 cm
(b) 4 cm
(c) 5 cm
(d) 6 cm
Ans: (b) 4 cm
19. The length of the altitude of a triangle with sides 7 cm, 10 cm, and 13 cm using Heron’s formula is:
(a) 6 cm
(b) 7 cm
(c) 8 cm
(d) 9 cm
Ans: (a) 6 cm
20. If the sides of a triangle are 12 cm, 16 cm, and 20 cm, then its area using Heron’s formula will be:
(a) 72 sq. units
(b) 96 sq. units
(c) 120 sq. units
(d) 144 sq. units
Ans: (c) 120 sq. units
