







A circle of circumference 4*pi*r 
20180319 

Ankith pose la question : If the circumference of a circle is 4*pi*r, what is its area?
i) 4*pi*r^2
ii) 2*pi*r^2
iii)3*pi*r^2
iv) pi*r^2 Penny Nom lui répond. 





The area of a circle 
20160812 

sandeep pose la question : if circumference of a circle is πd what is the area? Penny Nom lui répond. 





The area of a circle in terms of the circumference 
20141104 

Sarah pose la question : How do you find the area of a circle if you already have the circumference?
There was one answer to this question already but it didn't make sense to
me, because they rounded up pi which you can't do so the answer is
incorrect. thanks Penny Nom lui répond. 





How does pir^2 = 1/4pid^2? 
20141014 

al pose la question : Hi I cant work out the algebra. How does pir^2 = 1/4pid^2 Thanx Penny Nom lui répond. 





The area of a circle of circumference 32.69 meters 
20140611 

coco pose la question : Find the area of a circle with a circumference of 32.69 meters. Penny Nom lui répond. 





The area of a semicircle 
20120528 

Rebecca pose la question : how do you find the area of a semi circle and then how do you add the area of a semi circle and the area of a rectangle? Penny Nom lui répond. 





A path around a pond 
20091031 

adeniji pose la question : find the area of a concrete path 2m wide surrounding a circular pond 12m in diameter Penny Nom lui répond. 





The area of a circle knowing only the length of a chord 
20070905 

James pose la question : I need some help in the right directions with a problem. I was presented with a problem where I need to find the area of a circle knowing only the length of a chord.
the is a circle in the center of a larger circle (which the size of either could change) the only thing that matter is that the chord is 100 ft long and rests on top of the smaller circle. Stephen la Rocque and Brennan Yaremko lui répond. 

