Question

50 PONTS !!!! Answer quick !!!!! PLS CHECK THE PIC FOR DIAGRAM !!!

Balls are arranged in rows to form an equilateral triangle. First row consists of one ball,the second two balls and so on. If 669 more balls are added, then all the balls can be arranged in the shape of a Square and each of its side then contains 8 balls less than each side of the triangle.


I. if there are n balls in each side of a triangle and there are n rows in the triangle then
the total number of balls in the triangle is:
a) (+1)
2
b)
2
c) (−1)
2
d) (+1)
2

II. Number of balls in each side of the square is:
a) 8 b) 64 c) 32 d) (n-8)
III. Initial number of balls is:
a) 1540 b) 1520 c) 1500 d) 1530
IV. Total number of balls in the square is:
a) 2209 b) 2210 c) 2200 d) 2000

Answer 1

Answer:

please search in Google