906SPMath2012
Sunday, December 2, 2012
Math Test:Answering #4
4.The figure below is composed of seven congruent squares. The area is 43.75cm2. Calculate its perimeter.
A=Area
P=Perimeter
What We Know:
A=43.75cm2
7 congruent squares
P=14 congruent segments
Answer:
43.75cm2/7 =A of
ONE
square
=6.25cm2
square root of 6.25cm2=
ONE
side of small square
=2.5cm
2.5cmx14=A of shape
=35cm
Perimeter of the shape is 35cm.
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