Please answer the question with explanation.
Attachments:
Answers
Answered by
1
a = 2b = 4c
a:b:c = 4:2:1
so,put
a = 4x
b = 2x
c = x
(a+b+c)^2/a^2+b^2+c^2 =
= (7x)^2/ 16x^2+4x^2+x^2
= 49x^2/21x^2
=7/3
=21/3. option (b)
Hope it helps
a:b:c = 4:2:1
so,put
a = 4x
b = 2x
c = x
(a+b+c)^2/a^2+b^2+c^2 =
= (7x)^2/ 16x^2+4x^2+x^2
= 49x^2/21x^2
=7/3
=21/3. option (b)
Hope it helps
Zak11:
Thanks a lot
You are right
wlcm
Similar questions