The height of an equilateral traingle is 6cm Find it's area

Given:-H = 6cmall side are equalTo Find:-Area of triangleSolution:-Let each side of the given triangle be a cm.Then ,•°• area of the given triangle

Hence, the area of the given triangle is 12√3cm²

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.