Question

guys I have a question which is very hurting it is hard for me and I can't solve it to the question is the Length breadth and the height of a cuboid are in the ratio 7 6 and 5 if the surface area of cuboid is 1926 CM square find its dimensions also find the volume of cuboid guys can you please solve this question it is hard for me

Answer 1

Answer:

Step-by-step explanation:

ratio=7:6:5

surface area=1926=2(lb+bh+lh)

let the dimensions be 7x 6x and 5x

2[(7x*6x)+(6x*5x)+(7x*5x)]=1926

2*42xsq.+30xsq.+35xsq.=1926

2*107xsq.=1926

107xsq.=1926/2

x square=963/107

x=under root 9

x=3

therefore,

7x=7*3

=21cm

6x=6*3

=18cm

5x=5*3

=15cm

volume=lbh

21*15*18

5670cm square