All categories

4 years ago

How to calucate surface area

Mathematics

2 answers:

umka2103 [35]4 years ago

7 0

Answer:

2πrh + 2πr²

Step-by-step explanation:

The surface area of a cylinder is made up of the lateral area (area of the curved side of the cylinder) and of the ends.

The lateral area is A = πdh, where d is the diameter of the cylinder and h is the height. This is equivalent to A = 2πrh, where r is the radius.

The area of one end of the cylinder is A = πr².

We must multiply that by 2 if we want the total area of the ends.

Then the overall total is

A = πdh + 2πr², or 2πrh + 2πr².

bearhunter [10]4 years ago

5 0

Answer:

Surface area of a cylinder = 2πrh+2πr²

r = radius

h = height

Step-by-step explanation:

You might be interested in

Which property of multiplication is shown? (9 + 4)×8=9×8+4×8

dybincka [34]

Yes I can do that if I can go get my mom is your name or what I can get it

7 0

4 years ago

If I give you seven apples, you will then have five times as many as I would then have, however, if you give me seven apples, we

jeka57 [31]

Answer:

28 apples

Step-by-step explanation:

3 0

3 years ago

Dia is 10 years old. How many years have to add with twice of her age to get 24?

salantis [7]

Answer:

Step-by-step explanation:

twice her age:

10*2 = 20

24-20 = 4

3 0

3 years ago

Read 2 more answers

Find the slope of the line through the points (3,2) and (4,5).

igomit [66]

Answer:

<h2>The answer is 3</h2>

Step-by-step explanation:

The slope of a line given two points can be found by using the formula

$m = \frac{ y_2 - y _ 1}{x_ 2 - x_ 1} \\$

where

(x1 , y1) and (x2 , y2) are the points

From the question we have

$m = \frac{5 - 2}{4 - 3} = \frac{3}{1} = 3 \\$

We have the final answer as

Hope this helps you

5 0

4 years ago

A random sample of 145 students is chosen from a population of 4,250 students. The mean IQ in the sample is 130, with a standard

snow_tiger [21]

Answer:

Approximately, the 90% confidence interval for the students' mean IQ score is between 129.045 - 130.956

Step-by-step explanation:

The formula to use to solve this question is called the Confidence Interval formula.

Confidence interval =

x ± z × ( σ/ (√n) )

Where:

x = the sample mean = 130

z = the z-value for 90% confidence = 1.645

σ = standard deviation = 7

n = sample size = 145

130 ± 1.645 × (7/√145)

130 ± 0.9562687005

130 - 0.9562687005 = 129.0437313

130 + 0.9562687005 = 130.9562687005

Therefore, approximately, the 90% confidence interval for the students' mean IQ score is between 129.045 - 130.956

7 0

3 years ago

How to calucate surface area​

How to calucate surface area