Home Maths Differentiation and Applications of Derivatives JEE Main 2021 A wire of length 20m is to be cut into two p…
Maths Differentiation and Applications of Derivatives JEE Main 2021 Single Correct MCQ
Published on: August 14, 2026

A wire of length 20m is to be cut into two pieces.

One of the pieces is to be made into a square and the other into a regular hexagon. Then the length of the side (in meters) of the hexagon, so that the combined area of the square and the hexagon is minimum, is:

A
B
C
D

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Text Solution

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The correct answer is:
D

Let the wire is cut into two pieces of length x and 20-x.

Area of square Area of regular hexagon

Total area

at

Length of side of regular Hexagon

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