What is the approximate minimum length of a rope required to enclose an area of 154 square meters?

[sambati]

What is the approximate minimum length of a rope required to enclose an area of 154 square meters?

A 154
B 60
C 57
D 50
E 44

[Jay@ManhattanReview]

What is the approximate minimum length of a rope required to enclose an area of 154 square meters?

A 154
B 60
C 57
D 50
E 44

For the given area 154 sq. mtr, to get the approximate minimum length of the rope required to enclose the area, the plane must be a circle.

So, we have

Area of circle = πr^2 = 154

So, r = 7 mtr

So, the circumference of the circle = 2πr = 2*22/7*7 = 44 sq. mtr.

Correct answer: E

Hope this helps!

-Jay
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