Question

The dimensions of a cuboid are in ratio 1:2:3 and its total surface area is 352m2​

Answer 1

let ratio constant be x

1x 2x 3x

atq

2(lb+bh+lh)=tsa

2(1x×2x+2x×3x+1x×3x)=352

2(2x^2+6x^2+3x^2)=352

2(11x^2)=352

22x^2=352

x^2=352/22

x^2=16

x=√16

x=4

1x=4

2x=8

3x=12

hope it helps

Answer 2

Answer:

let l=x b=2x h=3x

Step-by-step explanation:

total surface area =2(lb+bh+hl)

352=2(x*2x +2x*3x +3x*x)

352=2(2x^2+6x^2 +3x^2)

352=2(11x^2)

176=11x^2

176/11=x^2

16=x^2

taking square root

x=4

dimensions are

l=4cm b=8 cm h=12cm

what to find is not given