s = 13 Area = 13² Or 169 perimet er=13(4 ) or 52
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s = 13Area = 13²Or 169 perimeter=13(4) or 52
Warm Up March 29, 20113. Which expression gives the area
and perimeter of the square we just solved?
A. P=2(13) A=4(13)
B.P=4(13) A=13²
C.P=13² A=4(13)
Area of a Rectangle
base
height
Area = base X heightb hA
Area of a Parallelogram
base
height
A = bh
Area of a
base
Area = base X height
height
half a parallelogram
2
TriangleParallelogram
Area of a
base
TrapezoidParallelogram
height
base2
base1
base1
base2
Area = X heightbase+( )
2
half of a parallelogram
AREA OF A TRAPEZOID
A = (b1+b2)h
2
A = 1 (b1+b2)h2
NOTES:
b1
b2
h
3
5
9
A h b1 b2 = (
(
+
2
6 6
= (
(
+
BIG IDEA!!
ROUND TABLECLOTH, SIZE OF A PANCAKE…
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