Some identical balls are arranged in rows to form an equilateral traingle. The first row consist...

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Some identical balls are arranged in rows to form an equilateral traingle. The first row consists of one ball,
P the second row cosists of two balls and so on. If 99

W more identical balls are added to the total number of balls used in forming the equilaterial triangle, then all these balls can be arranged in a square whose each side contains exactly 2 balls less than the number of balls each side of the triangle contains. Then the number of balls used to form the equialteral triangle is :-
[JEE Main-2019(April)]
(1) 190
(2) 262
(3) 225
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