Question

What’s the surface area and the formula for it?

Answer 1

Answer:

$1440cm^{2}$

Step-by-step explanation:

SA=2lw+2lh+2wh - Formula

SA=2(12×20)+2(12×15)+2(20×15)

SA=(2×240)+(2×180)+(2×300)

SA=480+360+600

SA=1440