alleryStart learning →Two square tiles with sides of 10 cm are put side by side to make a rectangle. What is its perimeter?
A60 cm
B80 cm
C40 cm
D50 cm
Answer & Solution
Correct answer: A. 60 cm
The rectangle is 20 cm by 10 cm, so its boundary is 20 + 10 + 20 + 10 = 60 cm.
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