2 years ago

Help please i’m confused

Mathematics

1 answer:

morpeh [17]2 years ago

7 0

Answer:

7/10 pi (radians)

Step-by-step explanation:

The formula for sector area is (angle * r^2)/2

140pi = angle*r^2/2

multiply both sides by 2

280pi = angle * r^2

r = 20 cm (substitute)

280pi = angle * (20)^2

280pi = angle * 400

Divide both sides by 400

7/10 pi = angle

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ch4aika [34]

Answer:

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Step-by-step explanation:

We are given that

$log(I/12)=-0.00235x$

Where x=Depth

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We have to find the intensity of the light at a depth of 20 feet.

Substitute the value of x

$log(I/12)=-0.00235\times 20$

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2 years ago

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elena-14-01-66 [18.8K]

Answer:

Step-by-step explanation:

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3 years ago

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Rudik [331]

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5 0

3 years ago

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Zielflug [23.3K]

Answer:

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3 years ago

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jekas [21]

Answer:

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3 years ago

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