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3 years ago

A circle has a circumference of 324\pi324π324, pi. what is the radius of the circle?

Mathematics

1 answer:

Masteriza [31]3 years ago

5 0

Circumference of a Circle is given by :

C = 2πr

=> 324π = 2πR

=> R = ( 324 / 2 ) = 162 units

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3 years ago

A box contains 15 resistors. twelve of them are labelled 50ω and the other three are labeled 100ω. what is the probability that

Igoryamba

Answer : P(second resistor is 100ω , given that the first resistor is 50ω) is given by

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Explanation :

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Let A: Event getting resistor with 50ω

B: Event getting resistor with 100ω

Since A and B are independent events .

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$P(A\cap B)=P(A).P(B)$

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$P(A)= \frac{12}{15}=\frac{4}{5}\\\\P(B)=\frac{3}{15}=\frac{1}{5}$

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$P(B\mid A)=\frac{P(A\cap B)}{P(A)}$

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4 years ago