Question

solve this problem....prove that questions

Answer 1

Answer:

Step-by-step explanation:

V = abc

S = 2(ab+bc+ca)

S/2 = ab + bc + ca

= 2/S(1/a+1/b+1/c)

= 2/S( bc + ca + ac / abc )

= 2/S × S/2V { since V = abc and ab + bc + ca = S/2 }

= 2/2V

= 1/V