The exterior angles of an octagon are 42°, 55°, 39°, 20°, 62°, 45°, and 47°. What is the measure of the eighth exterior angle? S
2 answers:
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Answer:
3060 cm^2
Step-by-step explanation:
First, let's find the areas of the trapezoids.
Next, let's find the area of the bases (the top rectangle and bottom rectangle).
- Top: 6 × 30 = 180
- Bottom: 34 × 30 = 1020
- 1020 + 180 = 1200.
After that, we find the surface area of the side rectangles.
- 17 × 30 = 510
- 25 × 30 = 750
- 510 + 750 = 1260.
Lastly, we add 1260, 1200, and 300 together.
Therefore, the surface area should be 3060 cm^2.
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