Answer:
A= 509
Step-by-step explanation:
36= the diameter 18= the radius
Area of a semi circle equals divided by two
18* 18 = 324 = 1017.87
1017.87 divided by 2 = 508.93 {509}
Hope this helps
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12=3x4
3= 2+1
4= 2+2 or 2x2=4