________________
A formula is given for the first step of the calculation of the conch-shell but none for the rest.
A bee (bhamara): Approximation by a semi-cylinder.
tattha tāva bhamarakhetāṇayaṇavidhāṇaṁ bhaṇissāmo puṇajoyaṇāyāmaṁ addhajoyaṇusseham joyaṇaddhaparihivikkhambhaṁ vikkhambhaddham ussehaguṇam āyāmeṇa guṇide ussehajoyaṇassa tiņņi aṭṭabhāgā bhavaṁti ||
ṭhaviya
Among them, in the first place, I shall explain the method for calculating the field of a bee. Now, the field of a bee has a length (a), a height (h) and a circumference (C/2) equal respectively to one joyaṇa, a half joyana and the circumference for (the diameter equal to) a half joyaṇa. When one has put down half the circumference multiplied by the height, and multilpied (it) by the length, three eighths of one (cubic) ussehajoyaṇa are produced. (Cf. Fig. 3.)(Dhavalā on CK 1.3.2, vol. 4, p. 34)
where
Jain Education International
V=
C/2
xhxa=
a = 1, h=
1
422222242
6/2
200
3
=TX
usseha-joyana3,
112
=
61
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312
(with π = = 3).
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