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3 years ago

HELPPPPPPP!!!!!!!!!!!!!

Mathematics

2 answers:

marshall27 [118]3 years ago

8 0

Calculate the area of the entire circle first.

A = 3.15 (r) ^2

A = 3.15 (2.25) ^2

Now calculate the area of the white circle

Take the radius - 1.5 to calculate the radius of the white circle

A = 3.15 (.75)^2

Now subtract your two answers

Sonbull [250]3 years ago

4 0

14.23 is your answer!!!!!!!

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Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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3 years ago

Graph the line with the equation y = -x - 3.

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Answer:

Step-by-step explanation:

$y=-x-3$

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2 years ago

The area of the shaded sector is shown. Find the radius of circle M. Round your answer to the nearest hundredth.

Vaselesa [24]

Answer:

See Explanation

Step-by-step explanation:

The question is incomplete, as the sector, its area and the angle at the center are not given.

I will solve this using the following illusration

The area of a sector is:

$Area= \frac{\theta}{360} * \pi r^2$

Assume that:

$\theta = 120$

$Area = 20$

The equation becomes

$20= \frac{120}{360} * \pi r^2$

Simplify

$20= \frac{1}{3} * \pi r^2$

Take: $\pi = 3.14$

$20= \frac{1}{3} *3.14* r^2$

Cross Multiply

$3.14 * r^2 = 20 * 3\\$

Solve for $r^2$

$r^2 = \frac{20 * 3}{3.14}$

$r^2 = 19.11$

Take square roots

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2 years ago

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Elden [556K]

Answer:

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Step-by-step explanation:

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3 years ago