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pishuonlain [190]
3 years ago
5

A circle with radius of 2 cm sits inside a circle with radius of 4 cm.

Mathematics
2 answers:
Dimas [21]3 years ago
8 0

Answer:

37.70

Step-by-step explanation:

A circle with radius of 2 cm sits inside a circle with radius of 4 cm.

What is the area of the shaded region?

Round your final answer to the nearest hundredth.

Assuming the shaded region is the region in between both circles this is how you solve it:

Find the area of the 2cm circle then the area of the 4cm circle. Then subtract the area of the 2cm circle from the 4cm circle. To find the area of a circle use the equation A = πr^2. The area of the smaller circle given the values is 4π or 12.5663706144. The area of the bigger circle given the values is 50.2654824574. Then subtract and you get 37.6991118431. Which is approximately 37.70.

Andru [333]3 years ago
3 0

Answer:

the shaded region is 12

Step-by-step explanation:

Subtract the area of 4 pie r squared from the area of 2 pie r squared

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Bella saw that 7:11 people brought an umbella to the beach. There were 99 peopel there. How many of them did not have a beach um
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Answer:

36 people of them did not have a beach umbrella.

Step-by-step explanation:

Proportion states that the two ratios or fractions are equal.

Let x represents the number of people did not have a beach umbrella.

As per the statement:

Bella saw that 7 : 11 people brought an umbrella to the beach.

Out of 11 people, only 7 people brought an Umbrella to the beach.

Remaining people did not brought an Umbrella to the beach = 11 -7 = 4 people

It is also given that there were 99 people there.

then by definition of proportion:

\frac{4}{11} = \frac{x}{99}

By cross multiply we have;

99 \times 4 = 11x

Divide both sides by 11 we get;

x = 9 \times 4

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3 years ago
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tigry1 [53]

Answer:

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Lilit [14]

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Sveta_85 [38]

Answer:

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Step-by-step explanation:

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Vertical asymptote is y - axis.

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Answer:

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Step-by-step explanation:

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