What is the surface area of a right cylinder which has a base with radius 9 units and has a height of 12 units?

Mathematics

2 answers:

Dmitriy789 [7]3 years ago

8 0

Answer:

1187.52

Step-by-step explanation:

A=2πrh+2πr2=2·π·9·12+2·π·92≈1187.52202

Evgesh-ka [11]3 years ago

6 0

Answer:

1187.997

Step-by-step explanation:

surface area =2πrh+2πr^2

(2•22/7•9•12)+(2•22/7•9^2)

44/7(108)+44/7(81)

6.285(108)+6.285(81)

678.857+509.14

1187.997

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kap26 [50]

Answer:

B. 61%

Step-by-step explanation:

When we have the standard deviation of a sample, we use the t-distribution.

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So the correct answer is:

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Answer:

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Step-by-step explanation:

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