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3 years ago

A circle has a diameter of 10 cm. What is the best approximation of its area? Use 3.14 to approximate for π .

Mathematics

2 answers:

Tasya [4]3 years ago

6 0

Diameter = 10cm
radius =10/2 = 5 cm

Area = πr² = 3.14 * 5² = 78.5cm²

stich3 [128]3 years ago

6 0

Answer: 78.5 is your answer have a good one

Can I get brainliest pls

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3 years ago

You buy 11 bagels with a 20$ bill how m if change do you receive? how many bagels could you buy?

Svetllana [295]

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3 years ago

What is the product of −214 and −412?

nlexa [21]

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8 0

3 years ago

1. Lisa walked 48 blocks in 3 hours <br> _________blocks per hour

scoray [572]

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7 0

3 years ago

Read 2 more answers

Suppose that a restaurant chain claims that its bottles of ketchup contain 24 ounces of ketchup on average, with a standard devi

Tanya [424]

Answer:

Confidence Interval = (23.776, 24.224)

Step-by-step explanation:

Restaurant chain claims that its bottles of ketchup contain 24 ounces of ketchup on average.

⇒ Mean = 24 ounces.

Standard Deviation = 0.8

Number of bottles used for sample = 49

⇒ n = 49

Confidence level = 95%

Corresponding z value with 95% confidence level = 1.96

Now, confidence interval is given by the following expression :

$Mean \pm z^*\times \frac{\sigma}{\sqrt{n}}\\\\=24\pm1.96\times \frac{0.8}{\sqrt{49}}\\\\=24\pm 0.224$

Hence, Confidence Interval = (23.776, 24.224)

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3 years ago