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olga nikolaevna [1]
3 years ago
11

Whats the circumference of a circle with a radius of 21 meters

Mathematics
2 answers:
r-ruslan [8.4K]3 years ago
8 0

Answer:

131.88 m^2

Step-by-step explanation:

Circumference formula: 2pi × radius

2 × 3.14 = 6.28

6.28 × 21 = 131.88

Bogdan [553]3 years ago
7 0

Answer:

C =131.88 meters

Step-by-step explanation:

The circumference of a circle is given by

C = 2*pi*r

where r is the radius

C = 2 * pi * 21

C = 42 pi

If we approximate pi by 3.14

C = 42(3.14)

C =131.88 meters

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If P(A) = 0.25, P(B) = 0.60 and P(A and B) = 0.15, are the event A and B independent? Explain/show work.
babymother [125]

Answer:

event A and B are independent because  P(A and B)  = P(A) x P(B) = 0.15

Step-by-step explanation:

When two events are independent, the probability of both occurring is the product of their separate probabilities, as expressed below;

P(A and B)  = P(A) x P(B)

Given;

P(A) =  0.25

P(B) = 0.60

P(A and B) = 0.15

Now, let's check if  P(A and B) will be equal to P(A) x P(B)

P(A) x P(B) =  0.25 x 0.60 = 0.15

P(A and B)  = P(A) x P(B), thus event A and B are independent.

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3 years ago
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I need help to solve this problems can somebody help me
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a chef makes 1 and 1/2 gallon of soup in a large pot how many one cup servings can the chef get from his large pot of soup
iragen [17]
1 gallon is 16 cups, so that means that half a gallon is 8 cups. Therefore, from 1 and 1/2 gallons of soup you can get 24 1 cup servings.
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3 years ago
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A rope with a length of 24 yards is cut into 7 pieces of equal length. Which is the correct way to show how to find how many yar
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Step-by-step explanation:

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3 years ago
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Please help it's urgent.
arlik [135]

Answer:

It is the second triangle.

Step-by-step explanation:

This is because the area of the square is given as 25^2 as the perpendicular, 144^2 as the base, and the hypotenuse is 169^2.

Length of the perpendicular = 5^2 (Because 25^2 / 5^2)

Length of the base = 12^2

Length of the hypotenuse = 13^2

So, the Pythagoras theorem is,

=> H^{2} = P^{2} + B^{2}

=> 13^{2} =12^{2} +5^{2}

This is true, because, 13*13 = 12*12 + 5*5

=> 169 = 144 + 25

=> 169 = 169

If my answer helped, kindly mark me as the brainliest!!

Thanks!!

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3 years ago
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