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9 votes
What is the surface area of the square pyramid represented by

the net?

9 cm

7 cm

9 cm

7 cm

9 cm

9 cm

What is the surface area of the square pyramid represented by the net? 9 cm 7 cm 9 cm-example-1
User Brazh
by
8.4k points

1 Answer

8 votes

Answer: 175 cm²

Explanation:

Since there are four congruent triangles, we will find the area of one and multiply by 4:

A =
(B*H)/(2)

A =
(7*9)/(2)

A = 31.5 cm²

-

31.5 cm² * 4 = 126 cm²

Now, we will find the area of the center square:

A = L²

A = 7²

A = 49 cm²

Lastly, we will find the total surface area:

126 cm² + 49 cm² = 175 cm²

The surface area of this square pyramid is 175 cm.

User OneGuyInDc
by
8.4k points

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