math formuleeeee :)

yea yea aku tau laa korang pandai xmcm aku ! myb formulee ni korang daa hebad tpy xpe laa aku share kan jugak ! :)
AREA = PAI X RADIUS2
PAI = 22/7 OR 3.14
CIRCUMFERENCE = 2 X PAI X RADIUS
LENGTH OF ARC = ANGLE(yg dah diberi)/360 X 2 X PAI X RADIUS
AREA OF ANNULUS = (PAI X RADIUS2 ) - (PAI X RADIUS2)
AREA OF SECTOR = ANGLE(yg dah diberi)X PAI X RADIUS2
Ni lah yg aku bley kongsi ngan korang ! nmpk mcm susa kan tpy bile korang tau formule ni sume soklan bole jawab :) ilike this type of question :) dlu xsuka skrang aku cinta dgn dyee <3 selamat mencubee