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Can someone please answer. There is one problem. There's a picture. Thank you!

Can someone please answer. There is one problem. There's a picture. Thank you!-example-1
User Erex
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It is 19.21. You find the area of each of the sides. Remember that the area of a triangle is half of that of a square. The area of the square base is 2.89. The area of the triangle sides equals 16.32. Add that up and you get 19.21.
User Augusto Carmo
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