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CBSE Class 10 Answered

sir
Asked by hemant2020 | 04 Nov, 2010, 06:10: PM
answered-by-expert Expert Answer

Dear Student,

 

The perimeter of an equilateral triangle of side a is given by 3a.

Also its altitude = √3a/2

 For the circle of radius r, Area = Πr2

So, Πr2 = 154

=> r = 7cm

Also, r = 1/3 (√3a/2)

=> a = 2√3 r

=> a =14√3 cm

So, perimeter of triangle = 3a = 42√3 cm = 72.746 cm

 

Regards Topperlearning.

 

Answered by | 06 Nov, 2010, 01:18: PM

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