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Shalnov [3]
3 years ago
6

Find the area of the figure. Round to the nearest tenth if necessary.

Mathematics
1 answer:
Ulleksa [173]3 years ago
3 0

9514 1404 393

Answer:

  A.  12.28 km²

Step-by-step explanation:

The area of the figure is the sum of the areas of its parts. The area of the triangular part is ...

  A = 1/2bh

  A = 1/2(3 km)(4 km) = 6 km²

__

The area of the semicircular part is ...

  A = 1/2πr²

  A = 1/2(3.14)(2 km)² = 6.28 km²

__

Then the area of the figure is ...

  6 km² + 6.28 km² = 12.28 km²

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