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iVinArrow [24]
3 years ago
8

A sphere has a surface area of 80 square feet. Which choice is the closest to its radius? Use 3.14 to approximate pi.

Mathematics
2 answers:
solniwko [45]3 years ago
6 0
Answer: 2.524 ft
----
The equation for the surface area of a sphere is SA = 4  \pi  r^2.
SA = surface area
r = radius

You're told that the surface area, SA = <span>80 square feet. Plug that into the equation and solve for r:
</span>80 = 4 \pi r^2\\&#10;20 =  (3.14)  r^2\\&#10; r^2 =  \frac{20}{3.14} \\&#10;r =  \sqrt{ \frac{20}{3.14}}\\&#10;r \approx 2.524 \: ft<span>
</span>
viktelen [127]3 years ago
4 0

Answer: 2.52 feet

Step-by-step explanation:

This is a imagine math answer answer

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MA_775_DIABLO [31]

Answer:

Law of Sines

Step-by-step explanation:

Law of Sines: \frac{A}{sina} =\frac{B}{sinb} =\frac{C}{sinc}

Step 1: Solve for m∠B

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m∠B ≈ 39.4°

Step 3: Find m∠C

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5 0
3 years ago
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sergejj [24]

Answer:

Ben's rate is \dfrac{1}{6} greater than Kate's rate.

Step-by-step explanation:

1. If it takes Ben 2 days to write reports, then his rate is \dfrac{1}{2} of reports per day.

2. If it takes Kate 3 days to write reports, then her rate is \dfrac{1}{3} of reports per day.

3. Ben's rate is

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4 0
3 years ago
Why should money for eating out at a restaurant be taken from the entertainment budget instead of from the food budget?
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2 years ago
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8 0
3 years ago
Read 2 more answers
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Answer:

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Step-by-step explanation:

Giving the following information:

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