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Q143 (IAS/2000) Science & Technology › Basic Science (Physics, Chemistry, Biology) › Quantitative aptitude topics Answer Verified

Which one of the following has a greater perimeter than the rest ?

Result
Your answer: —  Â·  Correct: C
Explanation

Compute each perimeter. Square: area 36 ⇒ side = 6 cm, perimeter = 4×6 = 24 cm. Equilateral triangle: side 9 ⇒ perimeter = 3×9 = 27 cm. Rectangle: length 10 and area 40 ⇒ breadth = 40/10 = 4 cm, perimeter = 2(10+4) = 28 cm. Circle: radius 4 ⇒ circumference = 2πr ≈ 2×3.1416×4 ≈ 25.13 cm. Comparing these values shows the rectangle has the greatest perimeter (28 cm). The same computations and numeric comparisons are recorded in the provided source, which lists the square 24 cm, triangle 27 cm, rectangle 28 cm and circle ≈25.14 cm .

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