What is the formula for finding the area of an oval?
456513
A=pi*x*y \n\nwhere x is small radius from centre to circumference and y is large radius from centre to circumference.
407600
The area of the segment is given by\n\nA = r^2[theta - sin(theta)]/2\n\nSo we need theta, which is the angle that contains the chord, and the radius of the circle.\n\nThe radius of the circle is given by\n\nr = (c^2 + 4h^2)/(8h)\n= (20^2 + 4(6)^2)/(8*6)\n= (400 + 144)/48\n= 11.3 m\n\ntheta is given by\n\ntheta = 2 arcsin(c/[2r])\n= 2 arcsin(20/[2(11.3)])\n= 2.17 radians\n\nSo\n\nA = r^2[theta - sin(theta)]/2\n= (11.3)^2[2.17 - sin(2.17)]/2\n= 85.92 m^2
501300
Area = Pi x R squared\nArea = Pi x (x - 6) squared\nArea = Pi x (x^2 - 12x + 36)\nArea = Pix^2 -Pi12x + Pi36\nArea = 3.14x^2 - 37.68x + 113.04\n\n(Using the approximation 3.14 for Pi)\n\nOf course, it has been a while and I'm a little rusty...
572270
triangle area = 1/2(height * width)\n\ncircle area = pi * radius^2
348844
It sounds to me like you are talking about a trapezoid. Go to the website I have listed under my sources and see if what you are describing looks like the trapezoid on there. If it is a trapezoid, the area formula is  Area = 1/2h(b1 + b2). h=height, b1=base 1, b2=base 2
375022
That's the formula for the area of a triangle.  A = area, b = length of the base, h = height.  So let's say you have a triangle that's 12 cm long at it's base, and 5 cm high, then you just plug those numbers in, and get\n\nA = 1/2 * 12 * 5 = 30 (which is measured in square cm)
508516
Surface Area Formulas\nIn general, the surface area is the sum of all the areas of all the shapes that cover the surface of the object.\n\nCube | Rectangular Prism | Prism | Sphere | Cylinder | Units\n\n\nNote: "ab" means "a" multiplied by "b". "a2" means "a squared", which is the same as "a" times "a".\nBe careful!! Units count. Use the same units for all measurements. Examples\n  Surface Area of a Cube = 6 a 2  \n\n\n (a is the length of the side of each edge of the cube) \n\nIn words, the surface area of a cube is the area of the six squares that cover it. The area of one of them is a*a, or a 2 . Since these are all the same, you can multiply one of them by six, so the surface area of a cube is 6 times one of the sides squared. \n\n \n\nSurface Area of a Rectangular Prism = 2ab + 2bc + 2ac  \n\n (a, b, and c are the lengths of the 3 sides) \n\nIn words, the surface area of a rectangular prism is the are of the six rectangles that cover it. But we don't have to figure out all six because we know that the top and bottom are the same, the front and back are the same, and the left and right sides are the same. \n\nThe area of the top and bottom (side lengths a and c) = a*c. Since there are two of them, you get 2ac. The front and back have side lengths of b and c. The area of one of them is b*c, and there are two of them, so the surface area of those two is 2bc. The left and right side have side lengths of a and b, so the surface area of one of them is a*b. Again, there are two of them, so their combined surface area is 2ab. \n\n  Surface Area of Any Prism \n\n\n  (b is the shape of the ends) \n\nSurface Area = Lateral area + Area of two ends \n\n(Lateral area) = (perimeter of shape b) * L \n\nSurface Area = (perimeter of shape b) * L+ 2*(Area of shape b) \n\n  Surface Area of a Sphere = 4 pi r 2  \n\n\n (r is radius of circle) \n\n  Surface Area of a Cylinder = 2 pi r 2 + 2 pi r h \n\n\n (h is the height of the cylinder, r is the radius of the top) \n\nSurface Area = Areas of top and bottom +Area of the side \n\nSurface Area = 2(Area of top) + (perimeter of top)* height \n\nSurface Area = 2(pi r 2) + (2 pi r)* h \n\nIn words, the easiest way is to think of a can. The surface area is the areas of all the parts needed to cover the can. That's the top, the bottom, and the paper label that wraps around the middle. \n\nYou can find the area of the top (or the bottom). That's the formula for area of a circle (pi r2). Since there is both a top and a bottom, that gets multiplied by two. \n\nThe side is like the label of the can. If you peel it off and lay it flat it will be a rectangle. The area of a rectangle is the product of the two sides. One side is the height of the can, the other side is the perimeter of the circle, since the label wraps once around the can. So the area of the rectangle is (2 pi r)* h. \n\nAdd those two parts together and you have the formula for the surface area of a cylinder. \n\nSurface Area = 2(pi r 2) + (2 pi r)* h \n\n  \n\n\nTip! Don't forget the units.  \n\n\nThese equations will give you correct answers if you keep the units straight. For example - to find the surface area of a cube with sides of 5 inches, the equation is: \n\nSurface Area = 6*(5 inches)2 \n\n= 6*(25 square inches) \n\n= 150 sq. inches
40239
A= pi x Radius(squared)\nA= 3.14 x 10 (squared)\nA= 3.14 x 100\nA= 314\n\n*2piR is the formula to find the CIRCUMFERENCE of a circle. (the second answer is wrong.)
952353
The curved surface area is 2*pi*r*h\n\nor 2*3.142*27*12 sq cms\n\nand 2*3.142*17*35 sq mms\n\nyou can do the rest
783613
Area = length x width
241611
kindly refer to the formula..and do you math HW yourself...\nApart from that if Diameter=8 cm...radius got to be 4cm\n\nI dont know the Surface area formula for cone but should be easy to find it somewhere like google.
942591
Chord length = R (see dimensions of rectangle ie flat part of slice)\nSo the size of the angle (θ) subtended at centre of circle is 60° as all sides of the triangle so formed = R.\nSo θ = π/3\n\nSo length of side of rectangle forming curved surface = length of Arc\n= Rθ\n= πR/3\n\nAlso area of segment at either end = ½R²(θ - sinθ)\n= ½R²(π/3 - sinπ/3)\n= ½R²(π/3 - √3/2)\n\nSo total surface area = Area of curved part + area of flat rectangle + 2 * area of end segment\n= πR/3 * 4R + R*4R + 2 * ½R²(π/3 - √3/2)\n= R²(5π/3 + 4 - √3/2)\n\nVolume = Area of segment * height\n= ½R²(π/3 - √3/2) * 4R\n= 2R³(π/3 - √3/2)
351984
If you have microsoft word...on the DRAWING toolbar there is an opiton to draw an oval. Hope this helps.
193691
area = r^2 * pi\narea = 9.8^2 * 3.1415\narea = 96.04 * 3.1415\narea is about 301.71
204855
Looks to me like you are trying to figure out a "PERIMETER" rather than an "AREA".  If so, you need to ADD the lengths of all the sides together.  If you ARE looking for an area, it is simply Length x Width (for a rectangle or square), 1/2 the base x height (for a triangle), or Pi x radius squared (Pi is approximately =3.1415926) for a circle.  If the "shape" of the object you are trying to find the area of is irregular, then you must divide it up into these familiar shapes first, find EACH individual area, then add those areas together for the total area.
912405
Let x be the radius of the semicircle, then the rectangle has base 2r and height h.  The total perimeter of the window is\n\npi*r + 2r + 2h = 20. \n\nSo h = (20 - pi*r - 2r) / 2\n\nThe area is (pi*r^2)/2 + 2rh.  Replace h with the above so that the area is a function of r.  Differentiate to find the maximum.
833977
are the circles inside the square?\nif they are...\none side of the square is 8m\nso you divide that by two since there two circles side by side.\ndiameter of circle = 4m and you half this to get radius which is 2m. \nTo get area of a circle use pi.\nArea of circle =pi x radius squared\n                      = pi x 4