hi i need to find the area of this:

Attachment 19227

im not sure how to do it because there isn't a radius there. if anyone can help and explain i will be very thankful!

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- Oct 8th 2010, 07:55 AMandyboy179area of semi circle?
hi i need to find the area of this:

Attachment 19227

im not sure how to do it because there isn't a radius there. if anyone can help and explain i will be very thankful! - Oct 8th 2010, 08:00 AMandyboy179
is 26 the diameter of the semicircle so i half it to make the radius so i would do, pie x 13 x13 to make the area of a circle then divide by 2 to make area of a semicircle?