who'll solve it??????

Que: What is the sum of perimeters of all the triangles with integer length whose area is 7200 square units???

some more questions on LCM funda....

Some Questions for Practice:

1.) N = 123456……………..142143, What is the remainder when N is divided by
(a) 36
(b) 72
(c) 18
(d) 6

2.) N = 42+442+4442+……….(88 terms) is divided by 36. What is the remainder?

3.) X = 22233344455566677788, Remainder when X is divided by
(a) 888
(b) 111
(c) 333