







6 bolt holes around a circle 
20141026 

From Bobby: What Is The Cord Dimension For 6 Holes On A 24" Bolt Circule Answered by Penny Nom. 





How many cords of wood is this? 
20131117 

From melody: 5.5 ft wide and 24ft long and 10ft wide how many cords of wood is this? Answered by Penny Nom. 





The number of cords on a pile of wood 
20130918 

From Gary: a cord of wood is 4 feet by 4 feet by 8 feet, how much wood is a row that is 16 in by 5 foot by 32 feet? Answered by Penny Nom. 





Two parallel chords of a circle 
20130730 

From Don: two parallel chords of a circle AB and CD on the same side from the center measure 6cm and 11 cm respectively. The distance between the 2 chords is 3 cm. Find the radius Answered by Penny Nom. 





A 3 foot circle using 1/2" cord 
20110804 

From Cindy: To make a 3 foot circle using 1/2" cord  how many lineal feet of cord
do I need? Answered by Robert Dawson. 





A cord length and angle measurement 
20090326 

From larry: i have a radius of 185". and an arc length of 186.5". how do i find the arc degrees
or cord length? Answered by Harley Weston. 





How many yards are in a cord? 
20090204 

From joanna: How many yards are in a cord? Answered by Robert Dawson and Penny Nom. 





Bundles of wood 
20071119 

From Darcy: When you purchase a "bundle" of wood at the store, it is marked .75 cubic feet. What is the formula for figuring out that measurement for cubic feet and what fraction of a true cord of wood (128 cubic feet) is it. I would appreciate the formula so I can build a spreadsheet to help my secretaries and myself be in compliance to the law when selling firewood. Thanks. Answered by Harley Weston. 





The height of an arc at the center 
20070717 

From Bob: I have a circle with a 26" radius and a cord whose length is 20". How can I find the height of the arc at the center point of the cord? Answered by Penny Nom. 





A cord of wood 
20070611 

From Wendi: A cord of wood is equal to a stack of wood that is 8 feet long, 4 feet wide, and 4 feet high. How many cords of wood are in 1 cubic foot? Answered by Stephen La Rocque. 





An arc, a cord and the radius of a circle 
20070114 

From Kevin: I have the length of the cord and the distance from the cord to the arc, is it possible to find the radius with just these parameters? Answered by Penny Nom. 





Cubic metres to cords 
20051222 

From Duncan: I have a quote of $2.95 per cubic metre of roundwood but I need the conversion equation to convert the above to a $ per cord. Answered by Penny Nom. 





Parabolic Mirrors 
19970128 

From Megan Wennberg: Consider a ray of light that passes through a chord of a parabola (the chord is above the focus and parallel to the directrix), hits the parabola at a point (x,y) and is reflected through the focus. If d1 is the distance from the chord to the point of incidence (x,y) and d2 is the distance from (x,y) to the focus, can you prove that the sum of the distances d1+d2 is constant, independent of the particular point of incidence. Answered by Penny Nom. 





La longueur de la corde 
20081224 

From Lucile: Voici l'énoncé :
On appelle (C) un cercle de centre O et de rayon 6cm.
A et B sont deux points du cercle (C) tels que AOB = 50°
Calculer la longueur de la corde [AB] (arrondi au millimètre).
On justifiera soigneusement toutes les étapes.
Cela fait déja 1 semaine que je trouve pas la réponse a cet énoncé .
Pouvez vous m'aider ? Merci d'avance . Answered by PierreLouis Gagnon. 





La longueur d'une corde 
20030122 

From Un eleve: Existetil une formule permettant de calculer la longueur d'une corde quelquonque d'un cercle connaissant uniquement le rayon de celuici? Si oui quelle estelle? Answered by Claude Tardif. 

