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- Higher Math - Calculating the Minimum Perimeter of a Triangle
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 triangle inequality after picking the first two points (one is on the line, the other is (a,b)) of any triangle
- 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
- 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!
- 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
- 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 "
- Can perimeter be determined without assuming isosceles triangle?
No, the perimeter cannot be determined without assuming the upper portion is an isosceles triangle Note: To give an answer for the area, you had to assume the lower section is a square There are no right angles labeled Diagrams need not be drawn to scale, for certain math problems, but if we were to take the 10 yards on the diagram as being closer to the truth, then the parts labeled 4 5
- perimeter - Math Help Forum
Two unequal circles (radius x and y, x > y) are touching each other A rubber band is passed around both of them What would be the length of the rubber band?
- 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)
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