The Shulbasutras of Baudhayana, Apastamba, Katyayana and Manava: With Text, English Translation and Commentary c8.t15.10
The Śulbasūtras of Baudhāyana, Āpastamba, Kātyāyana and Mānava: With Text, English Translation and Commentary c8.t15.10
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c8.t15.10
$PQ² = 2r² = (2 π r²)/(π) = (2 × 107100)/(π)$ $or PQ = 261 aṅg. 6 ti (for π = 3.14)$ The commentator's value is 261 *aṅg.* 4 *ti*, which closely agrees with our value.