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3 years ago

I need help on this HELP

Mathematics

2 answers:

Molodets [167]3 years ago

6 0

3.5

please rate brainliest :)

SIZIF [17.4K]3 years ago

6 0

A pound is 16 ounces, so 56 ounces would be 3.5 pounds.

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What is the area of a sector with a central angle of 108 degrees and a diameter of 21.2 cm?

Rasek [7]

Answer:

$105.84\ cm^2$

Step-by-step explanation:

step 1

Find the area of the circle

The area of the circle is

$A=\pi r^{2}$

we have

$r=21.2/2=10.6\ cm$ ----> the radius is half the diameter

substitute

$A=\pi (10.6)^{2}$

$A=112.36\pi\ cm^2$

step 2

Find the area of a sector

Remember that

The area of the circle subtends a central angle of 360 degrees

using proportion

Find out the area of a sector with a central angle of 108 degrees

$\frac{112.36\pi}{360^o}=\frac{x}{108^o}\\\\x=112.36\pi(108)/360\\\\x=33.708\pi\ cm^2$

assume

$\pi=3.14$

substitute

$33.708(3.14)=105.84\ cm^2$

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3 years ago

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1 year ago

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olga55 [171]

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2 years ago

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Answer:

Step-by-step explanation:

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2 years ago