. centre de ressources dilemmes et doutes le visage humain de mathématiques Qui sommes-nous Problème de mois activités de promotion babillard
Centrale des maths - centraledesmaths.uregina.ca
Dilemmes & doutes
« D & D »
. .
Fresh off the press   Voici les articles les plus récents
de notre base de données:
. .
nouvelle recherche

A circle in a square 2020-04-02
Sabra pose la question :
Hello, I have twins in the 7th grade that are learning how to find circumference of circles. I am struggling with figuring out how to help my children to find the answer to this question:

Tye has a square piece of yellow felt that has an area of 81 square inches. She wants to cut the largest circle possible from the material to create a sun for her art project. What is the area of the felt circle? Use 3.14 for pi. Round to the nearest hundredth if necessary.

I wasn't sure if I am to find the area of the circle through finding the area of the square or what steps we needed to follow to find the answer. Once I can see how one is worked out step-by-step, I usually can help them along with questions that are similar.

Penny Nom lui répond.
Four digit combinations from 1-3-4-8-0 2020-03-26
nancy pose la question :
Good evening. I'm in a quandry. Can you help? I would like to know what 4-digit combinations can be derived from 1-3-4-8-0 no repetitions
Penny Nom lui répond.
The center and radius of a circle 2020-03-25
Riley pose la question :
so it says find the center and the radius of the below circle

i need help learning how to solve this

Penny Nom lui répond.
A hemisphere and a cylinder 2020-03-23
Monalizsha pose la question :
Wat is the volume and the surface area of the hemisphere and cylinder (both are together) The height is 12cm of the cylinder and the diameter is 6cm
Penny Nom lui répond.
Aaron and Bill's ages 2020-03-12
Heather pose la question :
My granddaughter had this third grade math problem. Aaron is 4 times as old as his brother Bill. In ten years Aaron will be twice Bills age. What are their ages?
Penny Nom lui répond.
Six-digit telephone numbers 2020-03-12
Lulamile pose la question :
What is the probability that a six-digit telephone number has no repeated digits? The telephone number cannot begin with a zero
Penny Nom lui répond.
A times table in base 5 2020-03-11
Felix pose la question :
Design a time table for numbers 1-10 in base 5
Penny Nom lui répond.
Is there an equation to find what percent of 0 is 1? 2020-03-09
Asher pose la question :
Question: Is there an equation to find what percent of 0 is 1.

I remember learning quite a long time ago that the answer inst 0 and it isn't infinity. I'm pretty sure it was something like %=0 approaching infinity or %=1 approaching infinity. And I know it depends what value you assign the numbers i.e. dollars or temperature. Furthermore, is asking "what percent 1 dollar is of 0 dollars" the same question as "what percent profit do you make from selling something worth 0 dollars for 1 dollar."

Thank you for your time and consideration -Asher

Penny Nom lui répond.
Sam and Claudia go on a bike hike 2020-03-03
Christie pose la question :
Sam and Claudia start at the same time on a bike hike of 150 miles. Sam travels 3 miles per hour faster than Claudia and finishes the trip 8 1/3 hours before Claudia. At what rate in miles per hour does Sam travel?
Penny Nom lui répond.
Covering 1 acre, 6" deep 2020-03-02
Jim pose la question :
How many cubic yards does it take to cover 1 acre 6" deep. Thank you Also, can you show me how you determined that answer.
Penny Nom lui répond.
Fireman Fred needs to stay fit 2020-03-02
Chamundeswari pose la question :
How do I explain this problem to a year 3 kid?

Fireman Fred needs to stay fit for his job. He runs 4.5km, 4 mornings, a week . if it takes him 4 minutes and 15 seconds on average to run 1km, how much time does he spend running over 4 weeks?

Penny Nom lui répond.
The volume of a berm 2020-02-28
jason pose la question :
how much dirt is in an 20'w 12't 1350'l berm
Penny Nom lui répond.
A straight line graph 2020-02-26
Penehafo pose la question :
I have a problem of drawing a straight line graph by the equation y=2x-1
Penny Nom lui répond.
The height of an isosceles triangle 2020-02-23
Reagan pose la question :
I need to find the height of an isosceles triangle with a base of 6 and sides of 4 units. How do I find it?
Penny Nom lui répond.
Degrees, minutes and seconds 2020-02-21
Jonathan pose la question :
If a cone has an angle of 22 degrees, when i place it flat on a surface, the new resulting central angle is now at 68.69123834, but how come when i saw it on my friend it say 68 degree and 40 minutes, what is this minute?
Penny Nom lui répond.



Centrale des maths reçoit une aide financière de l’Université de Regina et de The Pacific Institute for the Mathematical Sciences.



accueil centre de ressources accueil Société mathématique du Canada l'Université de Regina PIMS