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Question
What is the length of each side of a square, if its perimeter is 80 cm?
What is the length of each side of a square, if its perimeter is 80 cm?
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Solution
The correct option is A 20 cm
The perimeter of a square of side 'a' = '4a'
It is given that the perimeter of square is equal to 80 cm.
Hence, 4a = 80 cm
a = 80/4 = 20 cm
So, the side of the square is 20 cm long.
The perimeter of a square of side 'a' = '4a'
It is given that the perimeter of square is equal to 80 cm.
Hence, 4a = 80 cm
a = 80/4 = 20 cm
So, the side of the square is 20 cm long.
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