Question

A wire is in the shape of a regular Pentagon of side 12 CM. It is rebent
into the shape of a rectangle whose length is 312 times its breadth. Find
the length and the breadth of the rectangle.​

Answer 1

Perimeter of regular pentagon= 12×5=60cm

let the length of rectangle be X

therefore, breath= 312X

perimeter of regular pentagon= perimeter of rectangle

60= 2(l+b)

30= X+312X

X= 30/313 cm

l=X= 30/313cm

b= 312X= 312×30/313= 9360/313cm

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