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3 years ago

Find the area and perimeter

Mathematics

1 answer:

pashok25 [27]3 years ago

8 0

Answer:

Part 1) The perimeter is $P=172\pi\ ft$

Part 2) The area is $A=1,204\pi\ ft^2$

Step-by-step explanation:

Part 1) Find the perimeter

we know that

The perimeter is equal to the circumference of the exterior circle plus the circumference of the interior circle

$P=2\pi (50)+2\pi (36)$

$P=2\pi (86)\\P=172\pi\ ft$

Part 2) Find the area

we know that

The area of the figure is equal to the area of the larger circle minus the area of the smaller circle

$A=\pi (50)^2-\pi (36)^2$

$A=\pi (1,204)$

$A=1,204\pi\ ft^2$

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Step-by-step explanation:

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3 years ago

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Answer:

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Step-by-step explanation:

The apparent brightness of a star is

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where

$\bf I_1=$ light intensity at distance $\bf d_1$

$\bf I_2=$ light intensity at distance $\bf d_2$

Let $\bf d_2$ be the distance we would have to place the 50-watt bulb, then replacing in the formula

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Answer:

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Step-by-step explanation:

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3 years ago

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<h2>Hello!</h2>

The answer is:

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Since negative time does not exists, the ball will hit the ground after:

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