Surface area 20 points

1 answer:

3 0

Answer:

612 m^2.

Step-by-step explanation:

Area = area of 3 rectangles + area of 2 triangles

= 15 * 14 + 9 * 14 + 12 *14 + 1/2 * 9 * 12 + 1/2 * 9 * 12

= 210 + 126 + 168 + 54 + 54

= 612 m^2.

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