Time, Speed & Distance
Aptitude

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Q.

A skating champion moves along the circumference of a circle of radius 28 m in 44 sec. How many seconds will it take her to move along the perimeter of a hexagon of side 48 m?

 A.

90

 B.

84

 C.

68

 D.

72

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Solution:
Option(D) is correct

Circumference of the circle = $2\pi r=2\times \dfrac{22}{7}\times 28=176$ m

Given, side of the hexagon =48 m

So, perimeter of the hexagon = $48×6=288$ m

Skating champion moves 176 m in 44 sec

Skating champion moves hexagon (288m) in: 

\(=\dfrac{44}{176}\times 288\)

72 sec


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