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jeka94
3 years ago
6

A cube has volume 216cm find total surface area of cube​

Mathematics
1 answer:
Katena32 [7]3 years ago
3 0

Answer:

Answer: 216 cm2 (square centimetres cm^{2}, in your question you had to put cm3, cubic centimetres, it's IMPORTANT )

Step-by-step explanation:

A perfect cube by definition has 3 equal dimensions, as an immediate rule: volume and total surface are equal, only the unit of measure changes (cubic for the volume, square for surface).

But let's calculate it anyway:

Volume  = Edge * Edge * Edge = length * width * depth = Edge^{3}  (remember: all edges are equal in this case)

so Edge = \sqrt[3]{Volume}

in your example Edge = \sqrt[3]{216} = 6cm

So the surface of one side is 6*6 = 36cm^{2}

There are 6 sides in total, so the total surface is 6*36 = 216 cm^{2}

Note: I call them "edges" but in case of a cube most say just "length"

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3 years ago
Find the value of x <br>a.2 <br>b.5<br>c.2.5<br>d.4​
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What is the slope of the line that contains the points (-2,2) and (3,4)
malfutka [58]

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Explanation:

Slope-intercept form: → y=mx+b

m: represents the slope and is constant.

b: represents the y-intercept.

Used rise/run.

\frac{rise}{run}

x^1,y^1=(-2,2)

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Answer:

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ًُ]ًٍُِ]ًًًًٍُُِِ]]ِ
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Answer:

1. \overline {TU}

2. <u>Given</u>

3. \overline {RT}  

4. <u>Side-Side-Side (SSS) rule of congruency</u>

Step-by-step explanation:

The two column proof is presented as follows;

Statement    {}                Reason

1.  \overline {RS} ≅  \overline {TU}    {}            Given

2. \overline {ST} ≅  \overline {UR}     {}           <u>Given</u>

3. \overline {RT} ≅  \overline {RT}     {}           Reflexive property

4. ΔRST ≅ ΔTUR   {}      <u>SSS rule of congruency</u>{}

The Side-Side-Side rule of congruency states that if three sides of one triangle are congruent to three sides of another triangle then both triangles are congruent.    

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