







The perimeter of a semicircle 
20110129 

From Keith: I have the perimeter of a semi circle of 37 but how do I calculate the diameter from this.
This is all the information I have. Answered by Penny Nom. 





The area of semi circle 
20100416 

From sagir: how to find the area of semi circle? Answered by Penny Nom. 





The perimeter of a semicircle 
20080202 

From Lisa: How do you find the perimeter of a semi circle when you are only given
the diameter, say 24 units? Answered by Penny Nom. 

