What is the area of a triangle having sides 4, 4 and 6 units?
- A. 3\sqrt{7} square unit ✓
- B. 8 square unit
- C. 7 square unit
- D. 7\sqrt{3} square unit
Correct Answer: A. 3\sqrt{7} square unit
Explanation
For an isosceles triangle with sides 4, 4, 6, the semi-perimeter s = \frac{4+4+6}{2} = 7. By Heron's formula, Area = \sqrt{7(7-4)(7-4)(7-6)} = \sqrt{7 \times 3 \times 3 \times 1} = 3\sqrt{7}.
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