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2 years ago

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A person bought a water tank of circular base having the radius 1.05 meter and height 3.5 meter for the use of own house from th

e shop. If the upper part of the tank is semi
spherical, how many liters of water will be contained in the
tank? Find it.

1 answer:

Anastasy [175]2 years ago

8 0

Answer:

I am not very sure is my answer correct or not, sorry

Hope that I can help you

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the performance score of 10 adults is recorded, and the results are 83 87 90 92 93 100 104 111 115 121 find the standard deviati

luda_lava [24]

Answer:

The standard deviation of the data set is $\sigma = 12.7906$ .

Step-by-step explanation:

The Standard Deviation is a measure of how spread out numbers are. Its symbol is σ (the greek letter sigma)

To find the standard deviation of the following data set

$\begin{array}{cccccccc}83&87&90&92&93&100&104&111\\115&121&&&&&&\end{array}$

we use the following formula

$\sigma = \sqrt{ \frac{ \sum{\left(x_i - \overline{X}\right)^2 }}{n-1} }$

Step 1: Find the mean $\left( \overline{X} \right)$ .

The mean of a data set is the sum of the terms divided by the total number of terms. Using math notation we have:

$Mean = \frac{Sum ~ of ~ terms}{Number ~ of ~ terms}$

$Mean = \frac{Sum ~ of ~ terms}{Number ~ of ~ terms}=\frac{83+87+90+92+93+100+104+111+115+121}{10} \\\\Mean = \frac{996}{10} =\frac{498}{5}=99.6$

Step 2: Create the below table.

Step 3: Find the sum of numbers in the last column to get.

$\sum{\left(x_i - \overline{X}\right)^2} = 1472.4$

Step 4: Calculate σ using the above formula.

$\sigma = \sqrt{ \frac{ \sum{\left(x_i - \overline{X}\right)^2 }}{n-1} } = \sqrt{ \frac{ 1472.4 }{ 10 - 1} } \approx 12.7906$

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3 years ago

The base of a cylinder has a radius of 5 cm. What is its area?

Oksi-84 [34.3K]

Answer:

157

Step-by-step explanation:

formula- 2 x 3.14 x 5 squared

6.28 x 5 squared

6.28 x 25

157

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3 years ago

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Working out on the regular eating healthy foods getting enough sleep and water :)

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2 years ago

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Find hcf and LCM of 40 ,60 and 80

andre [41]

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2 years ago

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12345 [234]

Answer:

$100\pi$

Step-by-step explanation:

Total Surface Area of cylinder = Lateral Surface Area + Area of both circle bases.

Lateral Surface Area = Circumference of Circle $\times$ Height

Lateral Surface Area = $(\pi \times2\times5) \times 5=50\pi$

Area of one circle base: $\pi (5)^{2} =25\pi$

Area of both circle bases: $25\pi \times2=50\pi$

Total Surface Area = $50\pi +50\pi =100\pi$

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3 years ago

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