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2 years ago

Find the surface area of a cylinder with diameter of 10 and height of 4

Mathematics

2 answers:

castortr0y [4]2 years ago

8 0

Answer:

282.74

Step-by-step explanation:

Arisa [49]2 years ago

5 0

Answer:

282.78

Step-by-step explanation:

radius = diameter / 2 = 10/2 = 5

Surface area:

A=2πrh+2πr^2

A=(2 * 3.142 * 5 * 4) + (2 * 3.142 * (5)^2)

A=125.68 + (2 * 3.142 * 25)

A=125.68 + 157.1

A=282.78

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What is a solution to 4x+6<(with a line under it ) 18

JulsSmile [24]

Answer:

$\textbf{$x \in (-\infty, 3] $}\\$

Step-by-step explanation:

$\textup{Given:}\\$ 4x + 6 $\textup{Subtracting $6$ from both the sides }\\$ 4x \leq 18 - 6 \hspace{5mm} (=12) $\\\textup{Dividing by $4$ on both the sides: \hspace{15mm} [Note that the sign of the inequality changes only when we divide it by a negative number]}\\$$ x \leq 3 $$\\\textup{$x$ can be any real number less than or equal to 3.}\\$ \iff x \in R^- \cup \{a : 0 \leq a \leq 3\} $$

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3 years ago

The house keeping staff

kvasek [131]

Answer:

In general, housekeeping departments are in charge of keeping buildings clean. They sweep, mop, dust, vacuum and clean the bathrooms. They also clean windows and public areas, and often remove trash and deposit it in the building's dumpsters.

Hope this helps :)

4 0

3 years ago

A fishing hook is at an elevation of −12 m relative to sea level. Half an hour later, the fishing hook's elevation increases by

yulyashka [42]

Answer:

$-12m + 12m =0$

Step-by-step explanation:

Given

$Initial\ Position = -12m$

$Rise = 12m$

Required

Represent as an equation

The new position of the hook is calculated by:

$New\ Position = Initial\ Position + Rise$

This gives:

$New\ Position = -12m + 12m$

$New\ Position = 0$

Hence, the equation is:

$-12m + 12m =0$

3 0

2 years ago

Which point on the y-axis lies on the line that passes through point C and is perpendicular to line AB?

Viefleur [7K]

If we need our line to pass through point C, then we have to use the x and coordinates of point C in our new equation. If that line is to be perpendicular to AB, we also need to find the slope of AB and then take its opposite reciprocal. First things first. Point C lies at (6, 4) so we will use x = 6 and y = 4 in our equation in a bit. The coordinates of A are (-2, 4) and the coordinates of B are (2, -8) so the slope between them is $m= \frac{-8-4}{2-(-2)}$ which is -3. The opposite reciprocal of -3 is 1/3. That's the slope we will use along with the points from C to write the new equation. We will do this by plugging in x, y, and m (slope) into the slope-intercept form of a line and solve for b. $4= \frac{1}{3} (6)+b$ and 4 = 2 + b. So b = 2. That's the y-intercept, the point on the y axis where the line goes through when x is 0. Therefore, the point you're looking for is (0, 2).

4 0

3 years ago

Community planners are planning to build a new community garden. They agree that the garden will be rectangular in shape, but th

skad [1K]

Answer:

Step-by-step explanation:

To find the original width, multiply 15.8 by w, and by 5.2.

You'll get 327.65 = 15.8w + 82.16.

Next, do the opposite of the symbol from both sides, 327.65 - 82.16 = 15.8w + 82.16.

The constant is 82.16, and the symbol is +, the opposite of plus is -, and thus subtract the constant from both sides.

You'll get 245.49 = 15.8w.

Now do the opposite of the symbol (a number next to a variable is multiplication, so do division, and divide 15.8 on both sides.

245.49/15.8 = 15.8w/15.8, which equals 15.5373417722.

7 0

2 years ago

Read 2 more answers