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Ivenika [448]
3 years ago
14

ABCDE is a regular pentagon. The apothem is 9.7 cm, and AB = 14.1 cm. Calculate the area of the pentagon. Round the answer to th

e nearest tenth.
Mathematics
1 answer:
devlian [24]3 years ago
8 0
        ABCDE is a regular pentagon which consists of 5 equal triangles.
Area of the pentagon ABCDE:
        A = 5 * 1.41 * 9.7 / 2 = 683.85 / 2 = 341.925 ≈ 341.9 cm²
       Answer: The area of the pentagon ABCDE is 341.9 cm².
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3 years ago
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  c) 16,500 m³

  d) 277,088 mm³

  a) V = LWH

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Step-by-step explanation:

The relevant volume formulas are ...

  • rectangular pyramid: V = 1/3LWH
  • cylinder: V = πr²h
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13c. The pyramid formula above tells us the volume is ...

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14a. The shape appears to be a rectangular prism, so its volume is given by the formula ...

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7 0
3 years ago
the combined area of two squares is 45 square centimetres each side is twice as long as a side of the other square what length o
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Answer:

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This combined area = 45 cm²

you simplify

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Step-by-step explanation:

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