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{:(,"स्तम्भ 'A'",,"स्तम्भ 'B'"),(1.,"विक...

`{:(,"स्तम्भ 'A'",,"स्तम्भ 'B'"),(1.,"विकर्ण"d_(1)"और"d_(2)"वाले समचतुर्भुज का क्षेत्रफल",(a),(1)/(2) xx a xx d),(2.,"भुजा a वाले समबाहु त्रिभुज का क्षेत्रफल",(b),(1)/(2) d^(2)),(3.,"हीरोन सूत्र",(c),(1)/(2) xx d_(1) xx d_(2)),(4.,"आधार a एवं शीर्ष लम्ब d वाले त्रिभुज का क्षेत्रफल",(d),(a^(2))/(4) sqrt(3)),(5.,"विकर्ण d वाले वर्ग का क्षेत्रफल ",(e),Delta = sqrt(s(s-a) (s-b) (s-c))","),(,,,"जहाँ" s = (a+b+c)/(2)):}`

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