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perimeter    音标拼音: [pɚ'ɪmətɚ]
n. 周长,周界

周长,周界

perimeter
n 1: the boundary line or the area immediately inside the
boundary [synonym: {margin}, {border}, {perimeter}]
2: a line enclosing a plane areas
3: the size of something as given by the distance around it
[synonym: {circumference}, {perimeter}]

Perimeter \Per*im"e*ter\, n. [Gr. ?; peri` around ? measure:
cf. F. p['e]rim[`e]tre.]
1. (Geom.) The outer boundary of a body or figure, or the sum
of all the sides.
[1913 Webster]

2. An instrument for determining the extent and shape of the
field of vision.
[1913 Webster] Perimetric


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  • Summing areas of squares | Math Help Forum
    A square S1 has a perimeter of 40 inches The vertices of a second square S2 are the midpoints of the sides of S1 The vertices of a third square S3 are the midpoints the sides of S2 Assume the process continues indefinitely, with the vertices of S K+1 being the midpoints of the sides of Sk
  • Changing dimension in a rectangle - Math Help Forum
    so where do i start for this problem? the length l of a rectangle is decreasing at the rate of 2 cm sec while the width w is increasing at the rate of 2 cm sec when l=12cm and w= 5cm, find the rates of change of area, perimeter, and the lengths of the diagonals of the rectangle
  • Perimeter of a circle as a limit of inscribed regular sided polygon
    Show that the perimeter Pn of an n-sided regular polygon inscribed in a circle of radius r is P n = 2 n r sin (π n) Find the limit of Pn as n approaches ∞ My attempt: The sum of the interior angles is π (n 2) If we apply the cosine law to find the length of each side of the n-sided regular polygon we find c 2 = 2 r 2 2 r 2 cos (4 π n π)
  • Rectangular Package | Math Help Forum
    A Rectangular package sent by a delivery can have a maximum combined length and girth (perimeter of a cross section) of 120 inches Here, there is a picture, which is a 3D package, with length of y, and with of x The problem is the following: Give a formula for the volume of the package
  • Divide a square into 7 equal parts - Math Help Forum
    Can you help me devide a square into seven equal parts? Each having the same amount of perimeter and the same area? It seems like everything I do I just end up with 8 peices Is this not possible? And if it isn't possible how do I prove that it's not possible? Thank you!
  • Perimeter - Math Help Forum
    How would I solve this? "The perimeter of a rectangle is 40 cm If the length were doubled and the width halved, the perimeter would be increased by 16cm Find the dimensions of the original rectangle "
  • Upper and Lower Bounds - Math Help Forum
    To granddad Really sorry if i am getting back to you on this For the first question perimeter of square , the data was the following: Upper bound perimeter=27 26cm Lower bound perimeter=27 22cm Give the perimeter of the square to an appropriate degree of accuracy As you said The true value of the perimeter lies between 27 22 cm and 27 26 cm





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