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first you do 23.5 X 23.5 (square it) which is 552.25. Then you multiply by pi. If your calculator has a pi button, use it, but if not, round to 3.14. 552.25 X 3.14 = 1734.065 If you have a pi button, you should get 1734.94454294496. Because Pi is irrational, even this is rounded. The easier way to use pi is 3.14 because you a most likely not expected to go out 20 decimal places for pi.
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Formula of area of a circle?
Area of a circle = pi*radius2 measured in square units
How do you find the area of a semi-circle in terms of pi?
The area of a full circle is pi x R squared where R = RADIUS The area of a semi circle is half of that, or pi x R squared/2
The formula for the circumference of a circle is what?
Circumference of a circle = diameter*pi or 2*pi*radius
What is the volume of a cylinder 5 inches high with a 1 inch radius?
the volume of a cylinder is (pi)r squared times the height, same as a circle but plus the height so the answer here would be ((pi) x 1) squared x 5. or 5 pi squared
What is the area of a circle with radius of 9?
area of a circle = pi r squared = pi x (9 squared) = 254.47 to 2 decimal places
What is the surface area of a cylinder with 4m in diameter and 6m in height?
The surface area of a (closed) cylinder equals the surface area of both bases (the top and bottom), i.e. pi x radius squared (first base) + pi x radius squared (second base), plus the lateral surface area (the surface area of the curved side), i.e. circumference (pi x diameter) x height. Inserting the numbers: SA = pi x (2 m.) squared + pi x (2 m.) squared + pi x 4 m. x 6 m. = pi x 4 m. squared + pi x 4 m. squared + pi x 24 m. squared = 8 x pi m. squared + 24 x pi m. squared = 32 x pi meters squared.
What is the diameter of a circle is the area is 400pie?
area = pi x diameter squared/4 = 400 pi diameter squared = 4 x 400 x pi/pi = 1600 diameter = sqrt 1600 = 40
What is the formula for finding the area of a circle with the diameter?
A=pi x d squared or you can get the radius by dividing by 2 and A=2 x (pi x r squared)
What is pi squared times pi?
n squared x n = n cubed but that does not equal 21. ---------------------------------------------------------------- Here is the correct version: We are looking for Pi squared times Pi which is Pi cubed Now Pi can never be written out exactly because its decimal number goes on for ever. However we can take a good approximation to Pi as 3.142 So Pi cubed = 3.142 x 3.142 x 3.142 = 31.018339 = 31.02 to 4 places.
What is the volume of a cylinder with a height of 5 and radius of 2?
The volume of a cylinder equals the area of the base times the height, which equals pi x radius squared x height. Inserting the numbers, V = pi x (2 m.) squared x 5 m. = pi x 4 m. squared x 5 m. = 20 x pi meters cubed or 20 x pi cubic meters.
What is the formula for the volume of a cylinder?
The volume of a cylinder is simply the area of the circular base times the cylinder's height. Volume of a cylinder = ╥ r² h (pi x radius squared x height) ╥ (Pi) ≈ 3.14 r = radius of the base circle, and h = height of the cylinder --- V= pi r squared times height Volume in cubic units = pi*radius2*height
What is cylinder volume?
pi x radius squared x height.
What is is the cylinder volume?
Pi x radius squared x height
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)
A circular garden has a radius of 6 ft What is the area of the garden in terms of Pi?
Are is found by (pi)r^2 or pi times the "radius squared" in this case it is (pi) x 6 squared = (pi) 36 Your answer 36 (pi) squared feet As mentioned above, the formula is A = Pi x R² where Pi = 3.1416 and R² is the radius multiplied by itself. Now, to apply the formula: A = 3.1416 x (6 x 6) = 3.1416 x 36 = 113.0976 sq ft.
What is the equation for circumfrence?
the radius squared x pi
Formula of area of a circle?
Area of a circle = pi*radius2 measured in square units
