HI this is katirevan.k my school is a bit nice but cannot beat Singapore school lah. I have 5 Singapore friends here in my school. I am my school's Tulip house vice-captain and handball captain. Sometime got alot of homework than sometime don't have so much homework bye-bye I need to go and do a project . I miss everyone at Anderson.BYE!!

kathirevan
met Frankenstein @ 5:50 AM

BRAHMA GUPTA
Brahma Gupta was born in 598A.D in Pakistan.
He gave four methods of multiplication.
He gave the following formula, used in G.P series
a + ar + ar2 + ar3 +……….. + arn-1 = (arn-1) ÷ (r – 1)
He gave the following formulae :
Area of a cyclic quadrilateral with side a, b, c, d= √(s -a)(s- b)(s -c)(s- d)where 2s = a + b + c + d
Length of its diagonals =

kathirevan
met Frankenstein @ 5:47 AM