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IF SURFACE AREA OF A CUBE IS 24CM2 THEN HOW TO CALCULATE THE LENGTH SIDES OF THE CUBE?

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  • The Master
  • 30,231 Answers

Think of how many sides has it has got.
Divide the total area of the cube by the area of one side.

Posted on Aug 21, 2019

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6ya6ya
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Posted on Jan 02, 2017

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koolbijay
  • 35 Answers

SOURCE: excel formula

the formulae for the surface area of round disc is
pi * r * r
where pi=3.14 and r =radious of disc= diametre/2 

for this 1st u have 2 calculate the radious of the disc that is
180/2=90mm
then convert it to  m by dividing 1000 ,so radious=90/1000=0.09 m
finally calculate the area= 3.14 * 0.09 * 0.09=0.025434 sq metres
for 38 disc multiply 38 with the above area that is
0.025434 * 38=0.966492 sq metres

in excel 2007  u can do it more easily by going 2 formulas tab.
Under formla tab click on engineering formula and  then convert
here u can convert from mm to m
after converting use the above formula i just told u.

Posted on Feb 27, 2008

label_chick
  • 407 Answers

SOURCE: need a formula to calculate length of service in excel

You could do a simple +NOW-START DATE

It would depend on the format of your start dates - i.e YY, DD/MM/YY as to the results you get.

Do want the results in years, months, days?




Posted on Jun 16, 2009

  • 8081 Answers

SOURCE: how to calculate surface area using a casio fx -83 ES

You sort out the formula for the surface you have to calculate then substitute the numerical values for the variables (sides, bases, heights), the constants if any (pi, etc.) an press = to get the result
Ex Square with side= 2m
Surface area=side^2
Area : 2 [X^2][=] result is 4 m^2
Circle of radius r=3 cm
Area: Pi* 3[^2]=28.27 cm^2

Posted on May 14, 2010

Mike258
  • 1498 Answers

SOURCE: the volume of the cube

Are you sure you didn't mean 27 cubic inches?

That works so cleanly to a 3" square and an answer of 54

270 gives a repeating 6.whatever. That's as close as you get in the freebies for what is likely a typo


Later

Posted on Nov 24, 2010

  • 102366 Answers

SOURCE: trying to find the surface area of a sphere given

Almost exactly the way it's written in the book.

In the LineIO mode press
3 SHIFT [xth-root] 5 0 0 0 * 3 / ( 4 * SHIFT [pi] ) ) =

In the MathIO mode press
SHIFT [xth-root] 3 right-arrow 5 0 0 0 * 3 / ( 4 * SHIFT [pi]) =

xth-root is the shifted function of the key just below and right of the big round cursor pad.
* is the multiply key
/ is the divide key
pi is the shifted function of the x10^x key in the middle of the bottom row

BTW there's no "square root" in this problem. There's a "cube root" or "third root". Square root is the second root.

Posted on May 14, 2011

Testimonial: "Thank you!! I agree that I did not want the square root. I knew how to get the cube root in but could not figure out how to put in the 3/4pi part."

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Area of traingle with tree side


All triangles have three sides.
There are two main formulas that do not call on trigonometric ratios.
The classic one:
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1 Answer

The difference between the inner and outer surfaces of a cylindrical pipe is 88cm sq..if the height of the cylindrical pipe is 14cm and the volume is 176cm cube. Find the inner and outer radius of the...


The surface area of the outer surface is the circumference of the outside of the pipe times its length. So, if OR is the radius of the outside of the pipe and SO is the outer surface area,
SO = 2 * pi * OR * 14
Similarly, the surface area of the outer surface is SI = 2 * pi * IR *14 (if SI is the inner surface area and IR is the radius of the inside of the pipe.
The question states that the difference between the outside surface area and the inside surface area is 88 sq. cm:
SO - SI = 88 ; substituting:
(2 * pi * OR * 14) - (2 * pi * IR * 14) = 88 ; factoring
(2 * pi * 14) (OR - IR) = 88 ;dividing both sides by 2*pi*14
(OR - IR) = 88/(2 * pi) = 88/(2 * 3.14159*14) = 1.00
So, the outside radius is 1 cm more than the inside radius.

It's not clear if the volume stated is the volume of the metal in the pipe or the volume of air inside the pipe, so I will solve it both ways:
If volume of 176cc is of the air inside, the formula for this volume is 14 * pi * IR *IR
176 = 14 * 3.14159 * IR * IR ; dividing both sides by 14 * 3.14159
176/(14 * 3.14159) = IR * IR ; doing the arithmetic
4 = IR * IR ; taking the square root of both sides
sqrt(4) = IR
IR = 2 cm
substituting back into the first equation, the OR is 1cm more than the IR, so
OR = 3 cm

If volume of 176cc is of the iron in the pipe, the formula for that volume is the difference between the volume of the outside of the pipe and the volume of the inside of the pipe, or
(14 * pi * OR * OR) - (14 * pi * IR * IR) = 176 ; factoring
(14 * pi) ((OR * OR) - (IR * IR)) = 176 ; dividing both sides by 14 * pi
((OR * OR) - (IR * IR)) = 176/(14 * 3.14159) = 4
but, since OR is 1 cm more than IR (from above), we can substitute OR = IR + 1
and OR * OR = (IR + 1) * (IR + 1) = (IR*IR) + 2*IR +1
So, ((OR * OR) - (IR * IR)) = 4 becomes
(IR*IR) + 2*IR +1 - (IR*IR) = 4 ; simplifying (IRsquared - IRsquared = 0)
2*IR + 1 = 4 ; subtract 1 from both sides
2*IR = 3 ; divide both sides by 2
IR = 3/2 ;
IR = 1.5cm
OR = 2.5cm

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1 Answer

If i know weight of aluminium uneven surface how can i calculate surface area of same?


'Area; is Length X Width. If one square unit (feet or meters) weighs one weight unit (Lb or Gr) and your weight is 2 weight units, you would have 2 area units. You say the surface area is uneven ... using this methoud would give you an approximate area so there would be some guessing ... I would say on small areas the variataion would be minimal. Larger areas with vide variation in thickness rould be more difficult to accurately figure out.

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May 18, 2010 | Irons

1 Answer

How to calculate surface area using a casio fx -83 ES


You sort out the formula for the surface you have to calculate then substitute the numerical values for the variables (sides, bases, heights), the constants if any (pi, etc.) an press = to get the result
Ex Square with side= 2m
Surface area=side^2
Area : 2 [X^2][=] result is 4 m^2
Circle of radius r=3 cm
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