BRAINLIST PLEASEEEE HELP

Mathematics

2 answers:

Aleksandr [31]3 years ago

6 0

Answer:

About 527.79

Step-by-step explanation:

formula is A=2πrh+2πr^2

arsen [322]3 years ago

5 0

Answer:

$527.52\:\mathrm{in^2}$

Step-by-step explanation:

The surface area of this cylinder consist of two circles and a 3D outer edge with respect to the circumference. The area of a circle is given as $r^2\pi$ . Using $\pi=3.14$ as requested in the problem, the area of both these circles is:

$2\cdot6^2\cdot 3.14=226.08\:\mathrm{in^2}$ .

The area of the outer edge is the circumference of the circle multiplied by the height. The circumference of a circle is given by $2r\pi$ .

Therefore, the circumference's 3D outer edge is:

$8\cdot2\cdot6\cdot 3.14 = 301.44\:\mathrm{in^2}$ .

Adding these up, the total surface area is:

$226.08+301.44=\fbox{$527.52\:\mathrm{in^2}$}$ .

You might be interested in

a ribbion is 3 2/3 yards long. Mae needs to cut the ribbion into pieces that are 2/3 yard long.how much ribbion will be left aft

Lemur [1.5K]

To answer this question you need to divide to get the number of pieces and then multiply whats leff by 3 2/3.

Divide 3 2/3 by 2/3. There are a few ways to do this but I am going to turn 3 2/3 into an improper fraction and then divide.

So $3\frac{2}{3} = \frac{11}{3}$
Now divide
$\frac{\frac{11}{3}}{\frac{2}{3}}$
$\frac{11}{3} \times \frac{3}{2} = \frac{11}{2} = 5\frac{1}{2} = 5.5$

We can see she can get 5.5 pieces at 2/3. So .5 is going to be left over so we ask our self, what is .5 of 3 2/3? We times .5 by 3 2/3 = 1.83 yards left. If you want it into a fraction, it would be $1\frac{83}{100}$ yards left