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The surface area of the provided figure is 1051.2 square ft after calculating the area separately.

What is the area of the rectangle?

It is defined as the area occupied by the rectangle in two-dimensional planner geometry.

The area of a rectangle can be calculated using the following formula:

We have given a three-dimensional figure with dimensions.

The surface area = area of seven rectangles + area of two triangle

= 15×9 + 2(15×12) + 2(9×12) + 2(9×15) + 2(1/2)[9(19.8-12)]

= 135 + 360 + 216 + 270 + 70.2

= 1051.2 square ft

Thus, the surface area of the provided figure is 1051.2 square ft after calculating the area separately.

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