Question

Use the net to determine the total surface area.

Answer 1

The net shows an equilateral triangle with side length 24 cm.

The area of an equilateral triangle of side length s is ...

... A = (√3)/4·s²

Using the above side length, the area is

... A = (√3)/4·(24 cm)² = 144√3 cm² ≈ 249.4 cm²

Your best choice is the first one:

... A) 249.6 cm²