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anonymous
 4 years ago
Find the area of an equilateral triangle whose perimeter is the same as that of a square whose area is 81 sq. cm
anonymous
 4 years ago
Find the area of an equilateral triangle whose perimeter is the same as that of a square whose area is 81 sq. cm

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anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0can you find the perimeter of the square ?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Use this formula to find the area of equal triangle

Directrix
 4 years ago
Best ResponseYou've already chosen the best response.1If the area of the square is 81, then a side of the square is 9. The perimeter of the square is 4*9 = 36. The equilateral triangle would have side length of 12. dw:1347692722838:dw The area of the equilateral triangle is 1/2 b times height. The height is found by using the 306090 theorem. You can also use the specialty theorem for the area of an equilateral triangle. That is the square of a side times the square root of 3 all divided by 4.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Thank you so much. :D

Directrix
 4 years ago
Best ResponseYou've already chosen the best response.1We're all glad to help.
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