Home › CBSE Class 9 › Mathematics › Perimeter and Area › Heron's formula finds a triangle's area from its:
Heron's formula finds a triangle's area from its:
ATwo angles n
BOne diagonal
CHeight alone
DThree sides
Answer & Solution
Correct answer: D. Three sides
1. The usual formula needs a base and a height.
2. Heron's formula needs no height at all.
3. It works from the lengths of the three sides.
4. So the answer is three sides.
_Source: NCERT Class 9 Mathematics, Ch 6 'Measuring Space: Perimeter and Area'_
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