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Nezavi [6.7K]
3 years ago
15

What would be the answer for part b ?? i really need help !

Mathematics
1 answer:
Scilla [17]3 years ago
5 0

Answer:

Area = 525 ft²

Step-by-step explanation:

Area of rectangle = Length × Width

Length = 20 + 15 = 35 ft

Width = 15 ft

Area = 35 ft × 15 ft = 525 ft²

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PLS HELP! I NEED TO FIND THE SURFACE AREA OF THIS CYLINDER!
Contact [7]

Exact Surface Area = 378pi

Approximate Surface Area = 1186.92

The approximate surface area uses pi = 3.14

The units are cm^2 or "square cm".

=========================================================

Work Shown:

SA = surface area of cylinder

SA = 2*pi*r^2 + 2*pi*r*h

SA = 2*pi*7^2 + 2*pi*7*20

SA = 2*pi*49 + 2*pi*140

SA = 2*49*pi + 2*140*pi

SA = 98pi + 280pi

SA = 378pi ..... exact surface area

SA = 378*3.14

SA = 1186.92 ..... approximate surface area

----------

Side note: The diameter 14 cuts in half to get the radius r = 7

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Question 9 of 10
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Combine the like terms to create an equivalent expression<br> -k - ( - 8k)
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Answer:

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Step-by-step explanation:

We are trying to combine like terms with the expression: -k - ( - 8k)

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