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A regular pentagon and a regular decagon...

A regular pentagon and a regular decagon have the same perimeter, prove that their areas are as `2:sqrt5.`

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The correct Answer is:
`=(2(sqrt5+1))/(5+sqrt5)=(2)/(sqrt5)`
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ARIHANT MATHS-PROPERTIES AND SOLUTION OF TRIANGLES -Exercise (Questions Asked In Previous 13 Years Exam)
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  13. Consider the circle x^2 + y^2 = 9 and the parabola y^2 = 8x. They inte...

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  14. Consider the circle x^2 + y^2 = 9 and the parabola y^2 = 8x. They inte...

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  20. For a regular polygon, let r and R be the radii of the inscribed and t...

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