Not if you are the score-keeper or if you are doing the area or the perimeter or the area of the field
You can't calculate the perimeter from the surface area, if you don't know what figure you are talking about. For example, the answer will be different for a circle, for a square, for a rectangle with a 2:1 side ratio, for a rectangle with a 3:1 ratio, for different ellipses, for a five-pointed star, etc.
Area : 44cm² Perimeter : 30cm
In which jobs we use perimeter and area?
Consider any triangle with given angles. If you expand it by a linear scale factor x, then its perimeter is multiplied by x, and its area by x2. When x is big, x2 is bigger than x. The area thus grows relative to the perimeter; as x tends to infinity, the ratio area/perimeter (call it R) tends to infinity. When x is small, x2 is smaller than x. The area thus shrinks relative to the perimeter; as x tends to zero, the ratio R tends to zero. For perimeter to equal area, R must equal 1. Since R is continuously defined, and (as we have just seen) it varies between zero and infinity, there must be some value of x that renders R = 1. This proves that an infinite number of triangles have perimeter equal to area, since our reasoning applied to triangles of any shape. To give one example, we'll find the equilateral triangle with perimeter equal to area. Set the length of a side equal to 2y. area = height x base / 2 = y2sqrt3 perimeter = 6y So, solve 6y = y2sqrt3 6 = ysqrt3 y = 6/sqrt3 = 2sqrt3 One more trivial example: if perimeter equals zero, then it definitely equals area.
the p/a ratio is the sum of the perimeter divided by the area therefore if perimeter is 20m and the area 25m2 the sum is 20/25=0.8
circle
The ratio is [ 4/x per unit ].
The question is not specific enough for a sensible answer. It could refer to the ratio of the area of the shape to its perimeter or depending on its shape, the ratio of the area to the length of one or more of its sides.
they are all related to math
4/x
The ratios of areas are the squares of the ratio of lengths (and the ratio of volumes are cubes of the ratio of lengths). As the perimeter of the second is twice the perimeter of the first, each length of the second is twice the length of the first, and so the ratio of the lengths is 1:2 Thus the ratio of the areas is 1²:2² = 1:4. Therefore the surface area of the larger prism is four times that of the smaller prism.
I think it depends on the shape
The perimeter to area ratio.
Circle and square are two entirely different shapes. But the ratio of areas of square to circle if their perimeter is equal is pi/4.
Not if you are the score-keeper or if you are doing the area or the perimeter or the area of the field
the ratio of the perimeter of triangle ABC to the perimeter of triangle JKL is 2:1. what is the perimeter of triangle JKL?