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kkurt [141]
2 years ago
8

find the curved surface area and total surface area of a right circular cylinder whose height is 15 cm and radius of the base is

7 cm​
Mathematics
1 answer:
ki77a [65]2 years ago
3 0

Answer:

CSA = 660cm^2 --- Curved Surface Area

TSA = 968cm^2  --- Total Surface Area

Step-by-step explanation:

Given

Shape: Cylinder

h = 15 -- height

r = 7 --- radius

Solving (a): The curved surface area (CSA)

This is calculated as:

CSA = 2\pi rh

This gives:

CSA = 2 * \frac{22}{7} * 7 * 15

CSA = 2 * 22* 15

CSA = 660cm^2

Solving (b): The total surface area (TSA)

This is calculated as:

TSA = 2\pi r(h + r)

This gives:

TSA = 2 * \frac{22}{7} * 7 * (15 + 7)

TSA = 2 * 22 * (15 + 7)

TSA = 2 * 22 * 22

TSA = 968cm^2

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Answer:

The 85% onfidence interval for the population proportion of new car buyers who prefer foreign cars over domestic cars is (0.151, 0.205).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

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The 85% onfidence interval for the population proportion of new car buyers who prefer foreign cars over domestic cars is (0.151, 0.205).

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