All categories

3 years ago

How do you find surface area

1 answer:

7 0

To get the surface area of the cylinder the formula is
A=2πrh+2πr^2To get the surface area of the cube is A=6a^2
it actuall depends on what type of surface do you want so just comment in the comment section so i can help you on surface area I hope i helped you :-*

You might be interested in

4+8/2* (6-3). Please answerrrr

Andrew [12]

Answer:

Step-by-step explanation:

brainliest plss

5 0

3 years ago

Read 2 more answers

What is the solution to the inequality.

Novosadov [1.4K]

Answer:

a. x<7 and x>-7

Step-by-step explanation:

√x²<√49

-7<x<7 hope this helps

7 0

2 years ago

How to round 65.85 to the nearest tenth

Contact [7]

Ok if the number behind the decimal is 4-0... round down, But if the number is 5-9 round up.

Example:65.85

The number behind the decimal is a 8.. So round this number up to the next availible whole number, which is 66.

7 0

3 years ago

Read 2 more answers

Let f(x)=x^2f ( x ) = x 2. Find the Riemann sum for ff on the interval [0,2][ 0 , 2 ], using 4 subintervals of equal width and t

sladkih [1.3K]

Answer:

$A_L=1.75$

Step-by-step explanation:

We are given:

$f(x)=x^2$

$interval = [a,b] = [0,2]$

Since $n = 4$ ⇒ $\Delta x = \frac{b-a}{n} = \frac{2-0}{4}=\frac{1}{2}$

Riemann sum is area under the function given. And it is asked to find Riemann sum for the left endpoint.

$A_L= \sum\limits^{n}_{i=1}\Delta xf(x_i) = \frac{1}{2}(0^2+(\frac{1}{2})^2+1^2+(\frac{3}{2})^2)=\frac{7}{4}=1.75$

Note:

If it will be asked to find right endpoint too,

$A_R=\sum\limits^{n}_{i=1}\Delta xf(x_i) =\frac{1}{2}((\frac{1}{2})^2+1^2+(\frac{3}{2})^2+2^2)=\frac{15}{4}=3.75$

The average of left and right endpoint Riemann sums will give approximate result of the area under $f(x)=x^2$ and it can be compared with the result of integral of the same function in the interval given.

So, $(A_R+A_L)/2 = (1.75+3.75)/2=2.25$

$\int^2_0x^2dx=x^3/3|^2_0=8/3=2.67$

Result are close but not same, since one is approximate and one is exact; however, by increasing sample rates (subintervals), closer result to the exact value can be found.

3 0

3 years ago

Emil bought a camera for $268.26, including tax. He made a down payment of $12.00 and paid the balance in 6 equal monthly paymen

iragen [17]

The total cost of the camera is $268.26

A down payment of $12 was paid so he now owes $256.26

Every 6 months Emil has to pay:
256.26 / 6 = 42.71
Therefore, each moth, Emil has to pay $42.71

7 0

3 years ago

Read 2 more answers