Answer :
surface area = 2 * ( height*width + height * length + width * length )
width: 1.5×10=15
depth: width=15
height: 10
2(10×15+15×15+15×15)
=2(150+225+225)
=2(600)
=1200
depth: width=15
height: 10
2(10×15+15×15+15×15)
=2(150+225+225)
=2(600)
=1200