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What is the derivative of cos pi x?
-(pi)*sin(pi*x)
What is x equal y sq over cos x pi?
Can you please claify if you mean x=y^2/ pi*cos(x) , or x=y^2/cos(pi), since they are very different sums.
Square root x plus 3 equals 12?
X = 81 sqrt(X) + 3 = 12 ( subtract 3 from each side ) sqrt(X) = 9 (square both sides ) X = 81 ( the square root of 81 is 9 )
What is 81 x 4?
81 x 4 equals 324. This can be calculated by multiplying 81 by 4, which is the same as adding 81 four times. In simpler terms, you can think of it as 81 multiplied by 4, resulting in the product of 324.
What x what equals 81?
9x9=81
What is the circumference of a circle with an area of 81?
In every circle . . .Area = (pi) x (radius)2Diameter = 2 x radiusCircumference = (pi) x diameterIn this circle, Area = (pi) R2 = 81R2 = 81/piR = sqrt( 81/pi )Diameter = 2 x sqrt( 81/pi )Circumference = (pi) x 2 x sqrt( 81/pi ) = 2 x sqrt( 81 pi ) = 18 sqrt(pi) = 31.9042 (rounded)
What is the volume of a cylinder with a radius of 9 cm and a height of 8 cm?
648pi. (pi = 3.14159...)Area of a circle = (pi) x (radius squared)= (pi)(9 squared) = (pi)81.Area of a cylinder = area of circle x height.= (pi)81 x 8= 648(pi)
What is 81 times pi?
81 x 355/113 = 254.47 to 2 places of decimals
What is pi r squared times three to the fourth power?
(pi) R2 x 34 = 81 pi R2
How do you determine the volume of a cup that has a diameter of 9 cm and the height of 8 cm?
Multiply 9 x 8. Volume = Pi/4 x D2 x H so Volume = Pi/4*81*8 = Pi*81*2 = 508.938 cubic cm.
What is the surface area of a sphere with a radius of 4.5?
The diameter is 2r = 9 The surface area is Pi x diameter2 = Pi x 81 or 254.469 square units.
How many square feet are in an 18 foot circle?
18 ft diameter is assumed. Area = Pi/4 x 182 = Pi x 81 = 254.469 ft2
What is the the area of a circle with a radius of 9?
Area= pi x radius squared. So radius (9) squared = 81, 81 x 3.14. See related link for more info.
What is the radius if the area of the garden is 81 times pi ft?
The radius is 9 feet because pi*92 = 81*pi
If the diameter of a circle is 18 what is the area with pi?
Area of circle: 81*pi square units
What is the circumference of a 81 cm?
The circumference = 2 x r x pi If your diamter is 81cm then your circumference is 254.5cm If your radius is 81cm then your circumference is 508.9cm
How do you find the radius of a circle if area is 81 pi?
Divide the 81 pi by pi, then square root it. (Use the formula for area of circle, which gives 81pi=pi*radius squared, but rearrange to find the radius). i.e. it's the square root of 81
