Question

The dimensions of a cuboid are in the ratio of $1:2:3$ and its total surface area is $88m^2$. Find the dimensions.

• A. $2m,4m$ and $6m$
• B. $2m,4m$ and $7m$
• C. $2m,5m$ and $6m$
• D. $3m,4m$ and $6m$

Answer 1

The correct option is A $2m,4m$ and $6m$

Let the dimension be $x,2x$ $\&$ $3x$.
Total surface area$=2(lb+bh+hl)88=2(2x^2+6x^2+3x^2)88=22x^2{x}^2=4x=2$
$\therefore$ dimensions ore $2m,4m$ $\&$ $6m$.