Respuesta :

Answer:

The correct answe id (C) 21.0

Step-by-step explanation:

Answer:

24 sq ft

Step-by-step explanation:

Ⓗⓘ ⓣⓗⓔⓡⓔ

Well, surface area is the area of each side of the shape.

Area of the square: 9 sq ft

Triangles: 15 sq ft {all together}

Then we add them all together

9+15

24 sq ft

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