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SVETLANKA909090 [29]
1 year ago
12

The radius of the water well is 2r inches. Find the area of the water well.

Mathematics
1 answer:
aleksandrvk [35]1 year ago
5 0

The area of the water well is 4\pi r^2

<h3>How to determine the area?</h3>

The radius is given as:

Radius, R = 2r

The area of the water well is calculated using:

A = \pi R^2

This gives

A = \pi (2r)^2\\\\\\

Evaluate the expression

A = 4\pi r^2

Hence, the area of the water well is 4\pi r^2

Read more about area at:

brainly.com/question/24487155

#SPJ1

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At the movies, a couple bought 2 medium drinks and a large popcorn for $13.85. At the same theater, a family bought 3 medium dri
yawa3891 [41]

Answer:

cost of one medium drink = $3.80

cost of one large popcorn = $6.25

Step-by-step explanation:

Let D = cost of one medium drink

Let P = cost of one large popcorn

If a couple bought 2 medium drinks and a large popcorn for $13.85:

⇒ 2D + P = 13.85

If a family bought 3 medium drinks and 2 large popcorn for a total of $23.90:

⇒ 3D + 2P = 23.90

Rewrite 2D + P = 13.85 to make P the subject:

⇒ P = 13.85 - 2D

Substitute into 3D + 2P = 23.90 and solve for D:

⇒ 3D + 2(13.85 - 2D) = 23.90

⇒ 3D + 27.7 - 4D = 23.90

⇒ D = 3.8

Substitute found value of D into P = 13.85 - 2D to find P:

⇒ P = 13.85 - (2 x 3.8) = 6.25

Therefore,

cost of one medium drink = $3.80

cost of one large popcorn = $6.25

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2 years ago
when a coin is flipped n times,what is the probability that the first head comes after exactly m tails
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Answer:

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Step-by-step explanation:

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full explanation

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