What is the area of a sector with a central angle of 3pi/5 radians and a diameter of 21.2cm

Mathematics

1 answer:

Elenna [48]3 years ago

8 0

Answer: 105.84 cm^2

To find the answer, first you have to start by finding the percent of the circle in the sector. Convert the radians given to 108 degrees. 108 out of 360 is 30%.

Now, find the area of the circle. It's pi x r^2, so the area is 352.810.

Multiply this by 30% to find our area of 105.84 cm^2

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ExtremeBDS [4]

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2 years ago

What is the approximate surface area of a sphere with a circumference of 37.68

sergij07 [2.7K]

We must find the radius so we can plug this into the formula for surface area.

Circumference = $2 \pi r$
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We are going to plug this in as our radius for the most accurate answer.

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