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3 years ago

A cube-shaped item needs to be painted. The item’s edge length is 2 cm. What is the total surface area that will be painted?

2 answers:

5 0

Each face of the cube has an area of 4cm^2 (2*2 = 4). A cube has six faces so the total surface area is 24cm^2 (4cm^2*6).

KatRina [158]3 years ago

5 0

Well find the area of one face pf a cape which is a square so all sides will be the same length. 2 times 2 is 4 so the area of one face of the cube is 4. There are 6 faces so you multiply by 4.

6 times 4 is 24.

The total surface area that will be painted is 24cm^2.

Hoped I helped!

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What is the answer to x- (-12) = -3

Julli [10]

X-(-12)=-3
X+12=-3
X=15

4 0

3 years ago

Whats the Approximate volume of the cylinder below in cubic centimeters?? Plz help

Sphinxa [80]

Answer:

Volume of a cylinder = 549.5 cm³

Step-by-step explanation:

Volume of a cylinder = πr²h

Where,

π = 3.14

Radius, r = 5 cm

Height, h = 7 cm

Volume of a cylinder = πr²h

= 3.14 * (5 cm)² * 7 cm

= 3.14 * 25 cm² * 7 cm

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Volume of a cylinder = 549.5 cm³

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3 years ago

Point K is on line JL. given JL =4x, JK= 2x+3, and KL=x, determine the numerical length of kl

balandron [24]

Hi! I'm happy to help!

Our total line is JL (4x), and it is split into two parts: JK, and KL. We have our values, and we know that JK+KL=JL, so we can substitute our values and solve for x:

4x=(2x+3)+(x)

4x=3x+3

To solve for x, we have to isolate it on one side of the equation.

First, let's subtract 3x from both sides so that we can isolate x:

4x=3x+3

-3x -3x

x=3

<u>So, our x=3, which means that KL=3.</u>

I hope this was helpful, keep learning! :D

5 0

3 years ago

Which equation calculates the number of 1/3-foot pieces that can be cut from a piece of

harina [27]

Answer:

$7:\dfrac{1}{3}=21$ pieces

Step-by-step explanation:

Suppose you have a 7 feet long wood.

You need to find how many $\frac{1}{3}$ -foot pieces can be cut from this wood.

To find this number of pieces, you have to divide the whole length of the wood by the length of one piece:

$7:\dfrac{1}{3}=\dfrac{7}{1}\cdot \dfrac{3}{1}=21$

8 0

3 years ago

Solve the inequality 2c/3+1>7<br>

Rasek [7]

Answer:

c > 9

Step-by-step explanation:

2c/3 + 1 > 7

subtract 1 from both sides

2c/3 > 6

multiply both sides by 3

2c > 18

divide both sides by 2

c > 9

6 0

2 years ago