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Who found a formula for the area of a cyclic quadrilateral?
ABrahmagupta
BAryabhattaa
CBhaskaraaaa
DShridharaaa
Answer & Solution
Correct answer: A. Brahmagupta
1. The formula echoes Heron's formula for a triangle.
2. It was discovered in India in 628 CE.
3. Brahmagupta discovered it.
4. So the answer is Brahmagupta.
_Source: NCERT Class 9 Mathematics, Ch 6 'Measuring Space: Perimeter and Area'_
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