Find the value of x

steposvetlana [31]

Answer:

The answer is C. $256\pi$ $in^2$ .

Step-by-step explanation:

To solve for the surface area of this cylinder, start by using the cylinder surface area formula, which is $SA=2\pi rh+2\pi r^{2}$ . Next, plug in the information given from the problem into the formula, which will look like $SA=(2)(\pi )(8in)(8in)+(2)(\pi )(8in^{2})$ . Then, simplify the equation, which will look like $SA=(128in)(\pi) +(128in)(\pi)$ . The next step is to simplify the equation further, which will look like $SA= 256\pi$ $in^{2}$ . The final answer is $256 \pi$ $in^2$ .

8 0

3 years ago

Select all situations which involve finding the surface area of a shape. You must select all correct answers

oksian1 [2.3K]

Amount of paper to wrap a gift

Painting a wooden box on all sides

The amount of aluminum it takes to make a soda can

4 0

3 years ago

Read 2 more answers

24. Three minus four times a number is equal to ten times a number plus ten.

tigry1 [53]

Answer:

(24) 3 - 4b = 10c + 10

(25) 4(3c+5) = 8

(26) - 6

(27) 4

Step-by-step explanation:

These questions require that words are translated into equations and then may be solved.

(24) Three minus four times a number is equal to ten times a number plus ten.

let the first number be b.

(a)Three minus four times a number ... can be represented as:

3 - (4 x b) = 3 - 4b

(b) ...ten times a number plus 10

let the other number be c. Therefore we have;

(10 x c) + 10 = 10c + 10

Now, three minus four times a number is equal to ten times a number plus ten means that expressions in (a) and (b) above are equal. i.e

3 - 4b = 10c + 10

(25) Four times the quantity of three times c plus 5 is equal to 8.

(a) four times the quantity of three times c plus 5 can be represented as

4 x (3 x c + 5) = 4(3c + 5)

(b) ... is equal to 8. This means that the expression in (a) is equal to 8.

4(3c + 5) = 8

(26) Six less than two thirds of a number is negative ten. Find the number.

(a) six less than can be represented as:

- 6

(b) two thirds of a number can be represented as

( $\frac{2}{3}$ )x [where x is the number]

(c) six less than two thirds of a number can thus be written as;

( $\frac{2}{3}$ )x - 6

(d) ... is negative 10 means that the expression is (c) above is equal to -10. i.e

( $\frac{2}{3}$ )x - 6 = -10

(e) Find the number.

The number can be found by solving for x in the expression in (d) above.

( $\frac{2}{3}$ )x - 6 = -10 [multiply through by 3]

2x - 18 = -30 [collect like terms]

2x = -30 + 18

2x = -12 [divide both sides by 2]

x = - 6

Therefore, the number is -6

(27) Twenty-nine is thirteen added to four times a number. What is the number.

(a) ... thirteen added to four times a number can be written as:

13 + 4b [where the number is b]

(b) Twenty-nine is thirteen added to four times a number means that the 29 is equal to the expression in (a) above. i.e

29 = 13 + 4b

(c) Find the number.

The number can be found by solving for b in the expression in (b) above. i.e

29 = 13 + 4b [collect like terms]

4b = 29 - 13

4b = 16 [divide both sides by 4]

b = 4

Therefore, the number is 4.

5 0

4 years ago

What is 3 divided by 31.8

Alik [6]

3/31.8 is .09434

This is best done through long division

8 0

3 years ago

A student graphs three of the four vertices of parallelogram ABCD. Which point could be the fourth vertex of the parallelogram?

Paladinen [302]

The point (6, 3) will make this a parallelogram.

In a parallelogram, both pairs of opposite sides are parallel. From the choices we have for point D, we want to find the coordinates of the point so that the slope from B to D is the same as the slope from A to C, since parallel lines have the same slope.

m = (y₂-y₁)/(x₂-x₁) = (3-0)/(3-0) = 3/3 = 1 (from point A to C)

This means that for every 1 we go up from point B, we want to go 1 right as well. 3 up and 3 right will get us the point (6, 3), which will give BD the same slope as AC.

5 0

3 years ago