CBSE Class 9 Maths Herons Formula MCQs Set C. Multiple choice questions have become an integral part of the CBSE examination system. Almost all exams have a section for MCQs. Students are advised to refer to the attached MCQ database and practise them regularly. This will help them to identify their weak areas and will help them to score better in examination. Parents should download and give the MCQs to their children for practice.

**1. A triangular park ABC has sides 120m, 80m and 50m . A gardener Dhania has to put a fence all around it and also plant grass inside. How much area in m ^{2} does she need to plant?**

(a) 9√15 (b) 12√15 (c) 6√15 (d) none of these

**2. The sides of a triangle are 35 cm, 54 cm and 61 cm, respectively. The length of its longest altitude:**

(a) 16√5 cm (b) 10√5 cm (c) 24√5 cm (d) 28 cm

**3. If the area of an equilateral triangle is 16√3 cm ^{2}, then the perimeter of the triangle is:**

(a) 64 cm (b) 60 cm (c) 36 cm (d) none of these

**4. The length of each side of an equilateral triangle having an area of 9√3 cm ^{2} is:**

(a) 8 cm (b) 6 cm (c) 36 cm (d) 4 cm

**5. The area of an equilateral triangle with side is:**

(a) 5.196 cm^{2} (b) 0.866 cm^{2} (c) 3.4896 cm^{2} (d) 1.732 cm^{2}

**6. The sides of a triangle are 56 cm, 60 cm and 52 cm, then the area of the triangle is:**

(a) 1322 cm^{2} (b) 1311 cm^{2} (c) 1344 cm^{2} (d) 1392 cm^{2}

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

(a) 15√3 m^{2} (b) 3√3 m^{2} (c) 12√3 m^{2} (d) none of these

**8. An isosceles right triangle has area 8 cm ^{2}, then length of its hypotenuse is**

(a) √32cm (b) √16cm (c) √48cm (d) √24cm

**9. A traffic signal board indicating ‘SCHOOL AHEAD’ is an equilateral triangle with side a, then area of the traffic signal is:**

(a) √3/2a^{2 } (b) √3/4a^{2} (c) √3/2a (d) none of these

**10. The base of a triangle is 12 cm and height is 8 cm, then the area of a triangle is:**

(a) 24 cm^{2} (b) 96 cm^{2} (c) 48 cm^{2} (d) 56 cm^{2}

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