Question

A rectangular box has a height of 10 cm. If the width is 1.5 times the height and the depth is the length of the width, what is the surface area of the rectangular box in square centimeters?

Answer 1

width: 1.5×10=15
depth: width=15
height: 10
2(10×15+15×15+15×15)
=2(150+225+225)
=2(600)
=1200

Answer 2

surface area = 2 * ( height*width + height * length + width * length )