The sides of a triangle are 3 cm, 4 cm, and 5 cm. What is its area?
A6 cm²
B10 cm²
C12 cm²
D20 cm²
Explanation
This is a right-angled triangle since 3^2 + 4^2 = 5^2. Area = (1/2) * 3 * 4 = 6 cm².
Exam Relevance
- Topic: Geometry, Mensuration & Trigonometry
- Subtopic: Triangle Area
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