Question

Given the net with dimensions below, find the surface area of the shape.

Answer 1

Answer:

136 cm²

Step-by-step explanation:

I'm going to split the net into:

2x          7 cm by 2 cm rectangles

2x          6 cm by 7 cm rectangles

2x          6 cm by 2 cm rectangles

The 2x means there's 2 of them.

Let's find the area of the 2x 7 cm by 2 cm rectangles:

2*7*2=

4*7=

28 cm²

Let's find the area of the 2x 6 cm by 7 cm rectangles:

2*6*7=

2*42=

84 cm²

Let's find the area of the 2x 6 cm by 2 cm rectangles:

2*6*2=

12*2=

24 cm²

Adding all these areas together gives us the surface area of the net:

28+84+24=136 cm²