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name each formula shown.
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A= ½bh
area of a triangle
A= ½ xy
area of a rhombus
p= l+l+w+w
perimeter if a rectangle or square.
p= 2(1)+w
perimeter of a semi circle
0/360 ×2*pie*r or 0/360x*pie*d
arc length
A= ½ (a+b)h
area of a triangular primed flat
.C= 2*pie*r
circumference
2r+0/360×2*pie*r
perimeter of a sector