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Nataliya [291]
3 years ago
12

Please help solve correctly. NO links or files. Correct answers only if not report. I will even give an additional 10 if correct

.

Mathematics
1 answer:
mezya [45]3 years ago
5 0

Answer:

144.51326 cm^{2}

Step-by-step explanation:

A = 2πrh + 2πr^{2}

d = 4

r = 4/2 = 2 cm

h = 9.5cm

A = 2π(2)(9.5) + 2π(2)^{2}  = 144.51326 cm^{2}

Don't know if you need to round it or not

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What is the area of a circle with diameter 8cm? Round your answer to the nearest tenth. use pi= 3.14
hodyreva [135]

Answer:

50.2 square cm

Step-by-step explanation:

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zhenek [66]

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Step-by-step explanation:

The complement rule is a theorem that provides a connection between the probability of an event and the probability of the complement of the event. Lat A the event of interest and A' the complement. The rule is defined by: P(A)+P(A') =1

On this case we have that n= 56 represent the employees selected to solve the puzzles.

We know that 23 out of the 56 selected solved the puzzles in less than 7 minutes.

Let's define the events A and A' like this:

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By the complement rule then:

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For this case if we replace we got:

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3 years ago
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Answer:

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Step-by-step explanation:

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