This question is from herons formula ...... can anyone help me
!! please !!
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semi perimeter = 15+ 13 +14)/2
= 21
area= √21( 21-15)(21-13)(21-14))
= √21(6)(8)(7)
= √3 √7√7 √3√2 .2√2
= 84
now area = 1/2. altitude . AC= 84
= 1/2. ALTITUDE. 14= 84
= altitude= 84/7= 12
= 21
area= √21( 21-15)(21-13)(21-14))
= √21(6)(8)(7)
= √3 √7√7 √3√2 .2√2
= 84
now area = 1/2. altitude . AC= 84
= 1/2. ALTITUDE. 14= 84
= altitude= 84/7= 12
Anahat:
thanks
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