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KiRa [710]
3 years ago
11

I will give brainly if you’re right and if you explain

Mathematics
1 answer:
stepan [7]3 years ago
3 0

area \: of \: circle =  \pi \times  {r}^{2}  \\ area \: of \: circle = 9\pi \times ft {}^{2}  \\    9\pi \times ft {}^{2} =  \pi \times  {r}^{2} \\   =   r =  \sqrt{\ 9 pi \times \: ft {}^{2}  }  \\ r = 3ft

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Answer: \dfrac{3}{51}

Step-by-step explanation:

Given : The total number of cards in a deck = 52

Number of red cards = 26

There are two types of red  cards : diamond and heart.

Number of diamond cards = 13

The probability that the first card is a diamond :-

\dfrac{13}{52}=\dfrac{1}{4}

Since diamond is also a red card.

Now, the total cards left = 51

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The probability that the second card is a red card (without repetition) is given by :-

\dfrac{12}{51}

Now, the probability of choosing a red card for the second card drawn, if the first card, drawn without replacement, was a diamond :-

\dfrac{1}{4}\times\dfrac{12}{51}=\dfrac{3}{51}

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4 years ago
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