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r -31

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โˆ™ 2010-12-02 21:42:50
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Q: What is r2 equals -2r plus 35?
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What is the volume cylinder if its diameter is equals to its height?

volume of cylinder = pi r2 h so if h = d, h = 2r so v= pi r2 2r depends on the lengths now just fill in the equation

In 2x plus 6y equals 32 what is x?

2x plus 6y equals 32 32 divided by 6= 5 R2 5+2= 7x6= 42-5=37-2=35 so X=5

What is 5 plus 6 equals plus 9?

It's an incorrect statement. 5 plus 6 equals plus 11. Also, pi R round, cornbread R2 .

Can the area of a circle ever equal the circumference of a circle?

No, no it can't. Circumference = 2r*pi Area = pi*r2 For the area to equal the circumference pi*r2 = pi*2r so divide both sides by pi r2 = 2r so divide both sides by r r = 2 Note that circumference is in units and area is in units squared i.e. radius = 2m, area = 12.56637m2 Ciercumference = 12.56637 m

What happens to the volume of a cylinder if the radius is doubled?

V = (pi)*R2*H if you double the radius then put 2R in place of R in the formula: V = (pi)*(2R)2*H V = 4pi*R2*H So the volume will increase 4 fold if you double the cylinder's radius.

Equation of director circle of the circle x2 plus y2 equals r2 is?

x2 + y2 = 2r2

How do you get the surface area of a cylinder having the same base and height?

Surface area = 2*pi*r2 + 2*pi*r*h square units where r is the radius and h is the height. If height = diameter of the base, then h = 2r so that area = 2*pi*r2 + 2*pi*r*2r = 6*pi*r2

What is the value of the expression r2 plus s3 when are equals 2 and s equals 3?

2 squared is 4 3 cubed is 27 27 plus 4 is 31

What is the equivalent resistance when R1 equals 1 ohm and R2 equals 3 ohm whose total resistance equals R1 R2?


If the area of a circle and its circumference have the same numerical value what is the length of the radius?

Area = pi*r2 = 2*pi*r = circumference then r2 = 2r so that r = 2

What happens to the force between two electric charges if the distance between them is doubled?

The force is reduced by a factor of 4, f= k/r2, thus 2r gives f=k/(2r)2 = k/4r2.

How many radius squared areas does it take to fill up a circle?

About 3.14159 of them. (pi) The area of a circle is (pi)r2. The area of the square into which the circle can be inscribed is 4r2 or (2r x 2r).

X2 plus y2 equals 100 what is the lengrth of the circles radius?

X2 + y2 = 100 = r2 r = 10

How do you solve r 5r plus r2?

The question cannot be solved because, thanks to shortcomings of the browser that is used for posting questions on WA, there is no equals symbol. I suggest you resubmit using words like plus, minus, equals to get around the browser problems.

What is r squared plus r squared?

r2+r2 = 2r2

How do you write the polar equation r2 - 2r sin theta in rectangular form?


Which circuit offers the greater resistance to the battery two bulbs in series or two bulbs in parallel and why?

The greatest resistance is two bulbs in series. The equivalent resistance is series is R1+R2 while in parallel the resistance is R1R2/(R1 +R2). R1 +R2 is greater than R1R2/(R1+R2); e.g. if R1=R2 = R the series resistance is 2R and the parallel resistance is R/2.

What is the diameter of a circle with an area of 254 cm?

Circle area = (pi)r2 = 254r2 = 254/pir = √254/pi ≈ 92r = diameter = 2(9) = 18 cm

How many times can 35 go into 142?

4 r2

What is r2 equals 17?

If: r2 = 17 Then: r = the square root of 17

R2 plus 10r plus 25?

The quadratic expression: r2+10r+25 = (r+5)(r+5) when factorised

LCM of r2-25 and r2 plus 14r plus 45?

The LCM is r^3 + 9r^2 - 25r - 225.

What is the diameter of a circle with an area of 27 pi cm?

A = πr2 = 27π, so r = √27 d = 2r = 2√27

Multiply r2 plus 7r plus 10 over 3 by 3r-30 over r2-5r-50?


How do you prove that A equals 25-r-5r-5 when a sector of a circle has a perimeter of 20cm and a area of A and the circle has a radius of r?

A=25-(r-5)(r-5)→10-r2(Length of Arc) + (2*radius) = Perimeter of Sector→rӨ+2r=20so Length of Arc,rӨ=20-2rArea of sector=½rӨ=rӨ(½r)Sub length of arc equation into area of sector equation gives: (20-2r)(½r)=10-r2Thus it is proved.