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docker41 [41]
2 years ago
11

I can’t figure out the surface area. Someone please help !! :)

Mathematics
1 answer:
Ilia_Sergeevich [38]2 years ago
5 0
<h3> Answer:</h3><h2>surface area is 227•1</h2><h2>volume is 321•7</h2>

Step-by-step explanation:

diameter is 8•5

radius is d/2

8•5/2

=4•25

surface area = 4πr^2

4×22/7×4•25×4•25

=1589•5/7

=227•1

Volume= 4/3πr^3

4/3×22/7×4•25×4•25×4•25

4/3×22/7×76•76

=321•7

Hope it helps

plz mark as brainliest

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3 years ago
3. Suppose you are testing H0 : µ = 20 vs H1 : µ &gt; 20. The sample is large (n = 71) and the variance, σ 2 , is known. (a) Fin
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Answer:

We reject the null hypothesis.

Step-by-step explanation:

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7 0
3 years ago
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lara31 [8.8K]
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6 0
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Answer:

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