Surface Area

Let’s cut the blocks one more time.

2

2

4

2

2

4

2

2

4

2

2

4

What is the surface area now ?

Answer: 160cm2

I arrived at this amount

because we have 4 sides

with 8 cm2 and 2 with

4 cm2 of surface area. This

makes one block have 40cm2 of

surface area. With four blocks

that is 160cm2 of surface area.

Previous slide

Next slide

Back to first slide

View graphic version