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3 years ago

A sector of a circle with radius 8 cm has an angle measure of 120°. What is the area of the sector to the

Mathematics

2 answers:

mezya [45]3 years ago

7 0

Answer:

64.9 cm

Step-by-step explanation:

Area of a sector is

$A=\pi r^{2} (\frac{angle}{360} )$

r is 8 and the angle measure is 120

$A=\pi 8^{2} (\frac{120}{360} )\\A=62\pi (\frac{120}{360} )\\A=64.93$

or 25.5 inches ? The question has the radius measured in cm, but asks for the answer in inches. So depending on how the actual question is worded, the answer will change.

64.9cm is equal to about 25.5 inches

Temka [501]3 years ago

3 0

Answer:

125.66cm

Step-by-step explanation:

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kvv77 [185]

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Step-by-step explanation:

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2 years ago

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Akimi4 [234]

11.
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1 year ago

What is the value of the rational expression 2x^2+5x+9/x^2+2x-1 when x=-2

Sergio039 [100]

Answer:

The value of the Rational expression when $x=-2$ is: $-7$

Step-by-step explanation:

For this exercise is important to remember:

When a negative number is raised to an even power, the result will be positive.
The multiplication of signs:

$(+)(+)=+\\(-)(-)=+\\(-)(+)=-$

Then, given the following Rational expression:

$\frac{2x^2+5x+9}{x^2+2x-1}$

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1. Substitute the given value of "x" ( $x=2$ ) into the expression:

$\frac{2(-2)^2+5(-2)+9}{(-2)^2+2(-2)-1}$

2. Evaluate and simplify:

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3 years ago

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a triangle with a perimeter of 36 inches is dilated with a scale factor of 2. what will be the perimeter of the image

sweet [91]

Answer:

Step-by-step explanation:

36/4=9 9/2=4.5 4.5+4.5+4.5+4.5=18

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3 years ago

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Tamiku [17]

Step-by-step explanation:

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3 years ago