The perimeter of a square is 20 cm. What is its area?
A. 25 cm²
B.50 cm²
C. 100 cm²
D. 120 cm²
A. 25 cm²
B.50 cm²
C. 100 cm²
D. 120 cm²
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Answer:
Using the formulas
Using the formulasA=a2
Using the formulasA=a2P=4a
Using the formulasA=a2P=4aSolving forA
Using the formulasA=a2P=4aSolving forAA=1
Using the formulasA=a2P=4aSolving forAA=116P2=1
Using the formulasA=a2P=4aSolving forAA=116P2=116·202=25cm²
Answer:
A. 25 cm²
Step-by-step explanation:
Using the formulas
A=a2
P=4a
Solving for A
A=1
16P2=1
16·202=25cm²