The area of a square picture is 441 sq cm. What is the length of its side?
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Answered by
1
Step-by-step explanation:
length × width= length × length = length2 = 441 square cm. Thus length = √441 = 21 cm.
Answered by
2
Area of square = (Side)²
441 = (Side)²
so, side = 21cm
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