17. Perimeter of a square and an equilateral triangle is equal. If the diagonal of the square is 10v2 cm, then find the area of equilateral triangle?
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Step-by-step explanation:
square and equilateral triangle equal perimeter.
diagonal of square = 10√2cm
area of triangle=?
side of square = 2(DC)²
= 2(10√2)²
(DC)²= 100×2/2
DC. = √100
DC= 10 CM
Perimeter of square = 4×10 = 40cm
perimeter of eq. triangle = 3a
a= 40/3
are off eq. triangle = √3/4a² = √3/4×(40/3)²
Hope this will help u! :)
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