#### Answer

$V = 7500~cm^3$
$A = 2350~cm^2$

#### Work Step by Step

We can let the dimensions of the closed box be:
$W = 15~cm$
$L = 20~cm$
$H = 25~cm$
We can find the volume:
$V = W \times L \times H = 15~cm \times 20~cm \times 25~cm$
$V = 7500~cm^3$
We can find the surface area:
$A = (2)(W \times L)+(2)(W \times H)+(2)(H \times L)$
$A = (2)(15~cm \times 20~cm)+(2)(15~cm \times 25~cm)+(2)(25~cm \times 20~cm)$
$A = 600~cm^2+750~cm^2+1000~cm^2$
$A = 2350~cm^2$