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vampirchik [111]
2 years ago
13

The radius of a circle is 20cm. What is its area? ( ratio= 3.14) ​

Mathematics
2 answers:
Musya8 [376]2 years ago
6 0

Answer:

A=100π=314.16 cm 2 to 5 significant figures

Step-by-step explanation:

stiv31 [10]2 years ago
5 0

Answer:

area =πr²

3.14 x 20 x 20

area=1256cm²

Step-by-step explanation:

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<h3>What is the difference in elevation between the bottom of the canyon and the​ bird's nest?</h3>

The given parameters are:

Nest = 71 4/5 feet above the seal level

Bottom of canyon = 875 7/10 below sea level

Below sea level means negative

So, we have:

Nest = 71 4/5 feet

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The difference in elevation between the bottom of the canyon and the​ bird's nest is calculated as

Difference = |Nest - Bottom of canyon|

This gives

Difference = |71 4/5 - (-875 7/10)|

Evaluate the difference

Difference = |947 1/2|

Remove the absolute bracket

Difference = 947 1/2

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Convert 21/8 into a decimal
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