
Summing areas of squares | Math Help Forum
2008年4月14日 · 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 …
Rectangular Package | Math Help Forum
2010年10月4日 · 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 …
Perimeter - Math Help Forum
2008年10月5日 · 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 …
Divide a square into 7 equal parts - Math Help Forum
2007年12月7日 · 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 …
Cubic Function of a Cylinder - Math Help Forum
2009年10月4日 · A rectangular piece of sheet metal with perimeter 50cm is rolled into a cylinder with open ends. a) Express the volume of the cylinder as a function of x. Then give the domain …
Perimeter of a circle as a limit of inscribed regular sided polygon
2024年9月9日 · 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 …
SOLVED - Percentage increase in area of rectangle given increase …
2010年8月29日 · 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...
find the the dimensions of x and y | Math Help Forum
2009年12月3日 · a. Find a formula for the area b. find a formula for the perimeter c. find the dimensions x and y that maximize the area given that the perimeter is 100 . * See attachment …
Maximizing Area & Differentials - Math Help Forum
2007年12月16日 · A window consists of an open rectangle topped by a semicircle and is to have a perimeter of 288 inches. Find the radius of the semicircle that will maximize the area of the …
Changing dimension in a rectangle - Math Help Forum
2006年10月16日 · 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 …