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  1. 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 …

  2. 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 …

  3. 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 …

  4. Rectangular Package | Math Help Forum

    Oct 4, 2010 · 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 …

  5. Relationship between Area of Square and Rectangle - Math Help Forum

    Nov 3, 2009 · The perimeter of the square has length 160 mm. How much longer is the perimeter of the rectangle than the perimeter of the square? (b) Same question but this time the perimeter of the …

  6. Optimization Problem... - Math Help Forum

    Mar 22, 2008 · Consider a window the shape of which is a rectangle of height h surmounted a triangle having a height T that is 1.5 times the width w of the rectangle (as shown in the figure below). If the …

  7. Divide a square into 7 equal parts - Math Help Forum

    Dec 7, 2007 · 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 …

  8. 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?

  9. Quadratics | Math Help Forum

    Dec 6, 2008 · A straight length of wire is 20 cm long. It is bent at right angles to form the two shorter sides of a right angled traignle. If hte triangle's area is 30cm^2, find: i. the length of the hypotenuse ii. …

  10. Norman window problem - Math Help Forum

    Aug 31, 2008 · A Norman window has the shape of a rectangle surmounted by a semicircle. If the perimeter of the window is 38 ft, express the area A of the window as a function of the width x of the …