Question

answer is (3).27
need explanation for this question.​

Answer 1

Answer:

answer for the given problem is given

Answer 2

Step-by-step explanation:

using (a+b+c)^2=a^2+b^2+c^2+2(ab+bc+ac)

9^2=27+2(ab+bc+ac)

81-27=2(ab+bc+ac)

54/2=ab+ bc+ ac

ab+ bc +ac=27