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  1. Perimeter of a circle as a limit of inscribed regular sided polygon

    Sep 9, 2024 · 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 …

  2. Higher Math - Calculating the Minimum Perimeter of a Triangle

    Oct 12, 2012 · No triangle exists that minimizes that condition. However, the infinum of the perimeters of all such triangles = twice the distance from (a,b) to the line y = x. That's just an application of the …

  3. SOLVED - Percentage increase in area of rectangle given increase in ...

    Aug 29, 2010 · One side of a rectangle is three times the other. If the perimeter increases by 2%, what is the percentage increase in area? I've started with these few...

  4. Perimeter of Athletic Lanes | Math Help Forum

    Jul 1, 2009 · An athletic track has four lanes. The lanes are 1 metre apart. If the inside lane is exactly 400 m, with 100m straights, find the lengths of the other three lanes. Can I please have an …

  5. Upper and Lower Bounds - Math Help Forum

    Mar 9, 2010 · 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 …

  6. Perimeter Word Problem | Math Help Forum

    Jun 29, 2010 · A standard rectangular billboard sign has a perimeter of 124 ft. The length is 6 ft. more than three times the width. Find the dimensions of the sign...

  7. Changing dimension in a rectangle - Math Help Forum

    Oct 16, 2006 · 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 …

  8. Perimeter of a rectangle. - Math Help Forum

    May 29, 2010 · How would I find the answer to... A rectangular flat-screen computer monitor has a diagonal that measures 20 inches. The ratio of the length of the screen to the width of the screen is 4 …

  9. Perimeter of right triangle with inscribed circle

    May 14, 2015 · Question: The radius of the inscribed circle is 5. If the length of the hypotenuse of the right triangle ABC is 19, what is the perimeter of the triangle?

  10. Optimizing a Norman Window - What am I doing wrong?

    Oct 5, 2007 · A Norman window has the shape of a semicircle atop a rectangle so that the diameter of the semicircle is equal to the width of the rectangle. What is the area of the largest possible Norman …