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12345 [234]
2 years ago
7

Find the surface are of the cylinder Plz explain

Advanced Placement (AP)
1 answer:
Nana76 [90]2 years ago
4 0

Answer:

Option D. 274.75 units²

Explanation:

From the question given above, the following data were obtained:

Radius (r) = 3.5 units

Height (h) = 9 units

Surface Area (SA) =?

The surface area of the cylinder can be obtained as follow:

SA = 2πr (h + r)

NOTE: Pi(π) = 3.14

SA = 2 × 3.14 × 3.5 × (9 + 3.5)

SA = 21.98 × 12.5

SA = 274.75 units²

Thus, the surface area of the cylinder is 274.75 units²

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Bill Board is trying to reduce his sodium intake to an average of 2300 mg.
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Answer:

mean average = 2542.5 mg

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Explanation:

The patient's average  daily intake  of sodium for those 4 days can be calculated by taking the mean average of the sample amounts given over the number of the total days.

mean average = \frac{2150+3005+2700+2315}{4}

mean average = \frac{10170}{4}

mean average = 2542.5 mg

Therefore the patient's average daily intake of sodium for those 4 days = 2542.5 mg

What is the patient’s average daily intake of sodium for those 4 days?

What would his 5th day sodium intake need to be to drop him below an average of 2300 mg

given that mean average = 2300; we can also determine the fifth day sodium intake as follows:

mean average = \frac{2150+3005+2700+2315+y}{5}\\2300 = \frac{2150+3005+2700+2315+y}{5}

2300*5 =2150+3005+2700+2315+y

11500 = 10170 +y

11500-10170 =y

y = 1330 mg

Hence, his sodium intake for the fifth day will be 1330 in order to drop him below an average of 2300 mg

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