Question

If the dimensions of a rectangular prism are 39 mm × 12 mm × 15 mm, then what is the surface area

Answer 1

`\huge\boxed{SA=2466\ (mm^2)}`

Explanation:

The formula of a Surface Area of a rectangular prisms:

`SA=2(lw+lh+wh)`

l - length

w - width

h - height

We have:

`l=39mm;\ w=12mm;\ h=15mm`

Substitute:

`SA=2\bigg((39)(12)+(39)(15)+(12)(15)\bigg)\\\\SA=2(468+585+180)\\\\SA=2(1233)\\\\SA=2466\ (mm^2)`