Question

The net of a solid is shown below:

What is the surface area of the solid?

21 square inches
24 square inches
33 square inches
57 square inches

Answer 1

33 is your answer................................................

Answer 2

notice, is just a pyramid's net, just like the one we saw before, it has a square in its base and 4 triangular faces.

so we do the same, get the area of each, sum them up.


`\bf \stackrel{square}{(3\cdot 3)}~~+~~\stackrel{4~triangles}{4\left[\cfrac{1}{2}(3)(4) \right]}\implies 9~~+~~24\implies 33`