Answer:
We've already seen how to find the length of a square's diagonal from its side: it is a ·√2. The radius is half the diameter, so r=a·√2/2 or r=a/√2. The circumference is 2·r·π, so it is a·√2·π. And the area is π·r², so it is π·a²/2.
Step-by-step explanation:
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perimeter of square is 4(side)=4(2r)=8r...
Answer:
We've already seen how to find the length of a square's diagonal from its side: it is a ·√2. The radius is half the diameter, so r=a·√2/2 or r=a/√2. The circumference is 2·r·π, so it is a·√2·π. And the area is π·r², so it is π·a²/2.
Step-by-step explanation:
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