How to calucate surface area

Mathematics

2 answers:

umka2103 [35]3 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]3 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

Please help me, I have minimum time

natita [175]

X= 5x Y=-6 I just added them together

8 0

2 years ago

Write a function rule that represents the sentence. y is 4 less than the product of 7 and x.

goldenfox [79]

Answer:

ｙ = 7x - 4

just as it says in words

3 0

2 years ago

What is the vertex of the absolute value function defined by ƒ(x) = |x + 5| + 7?

Temka [501]

To answer this, you need to know the general form of an absolute value function. the equation for this is f(x) = a|x - h| + k, and in this equation, the vertex is (h, k).

with that information, you can see that your vertex will be (-5, 7). you must take the negative for 5 because the general equation states that your h value is usually subtracted from x. to check your vertex, try plugging it into your general equation:
f(x) = a|x - (-5)| + 7
f(x) = a|x + 5| + 7 ... you see that this matches your given equation. this last part here was just to show why your 5 must be negative; your answer is bolded.

7 0

3 years ago

A water pipe is 4 7/12 feet beneath the surface of the road. What is the elevation of the pipe, in feet, expressed as a decimal?

Andrej [43]

The answer is C. U just have to divide 7 and 12 to get your decimal

8 0

3 years ago

Susan currently has an account balance of $1,336.60. Her initial deposit on the account was $820 and it earned 4.5% simple inter

emmasim [6.3K]

The correct option will be : 14 years

Explanation

Current account balance of Susan is $1,336.60 and her initial deposit was $820

So, the amount of interest earned $= 1336.60-820= 516.60$ dollar

Formula for Simple Interest is: $I= P*r*t$ , where $I$ is the amount of interest, $P$ is the initial amount, $r$ is the rate of interest in decimal and $t$ is the time duration in years.