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3 years ago

The radius of a circle is 5 cm. Find its area to the nearest tenth.

Mathematics

2 answers:

FromTheMoon [43]3 years ago

7 0

Answer:

A = 78.5 cm²

Step-by-step explanation:

Area of Circle = πr²

A = (3.14)(5)²

A = (3.14)(25)

A = 78.5 cm²

almond37 [142]3 years ago

7 0

The area formula of a circle is r² x π.

With that being said, we can now substitute in our radius value.

(5)² x π

From there, we can find the square root of the radius.

(25) x π

And then we can multiply by pi to solve.

78.539816..

Finally, we'll round to the nearest tenth to get our answer.

78.5

Therefore, the area of the circle is 78.5 cm.

<em>Hope this helped! :)</em>

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m_a_m_a [10]

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3 years ago

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riadik2000 [5.3K]

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The most money made from selling drinks is $150. Divide this over the cost per drink to get 150/(1.50) = 100; indicating that at most 100 drinks are sold per day. This is the largest that d can get because d represents the number of drinks sold.

The smallest d can get is d = 0 to mean that no drinks are sold.

In short: d is between 0 and 100, including both endpoints. We write $0 \le d \le 100$ to indicate this. This is the domain because the domain represents all the possible inputs allowed.

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The range is the set of allowed outputs.

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