CTET PAPER I 2019 · PYQ · Perimeter of Rectangle · easy
A 180 cm long wire is formed into a rectangle. If the width of this rectangle is 30 cm, what is its length?
A.45 cm
B.60 cm✓ Correct
C.90 cm
D.120 cm
Explanation
The wire forms the perimeter of the rectangle. Perimeter = 2(length + width) = 180 cm. So length + width = 90 cm. Given width = 30 cm, length = 90 - 30 = 60 cm.
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