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Using π = 3.14, find the area of a circle with a radius of 4.2. Round your answer to the nearest hundredth.

1 Answer

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9514 1404 393

Answer:

55.39 square units

Explanation:

The formula for the area of a circle is ...

A = πr²

Put the given numbers in place of the corresponding variables and do the arithmetic.

A = 3.14 × 4.2² = 3.14 × 17.64 = 55.3896

Rounded to hundredths, the area is ...

55.39 square units

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