" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
320 = luas persegi + 6/4 luas lingkaran
320 = r^2 + 3/2 πr^2
320 = r^2 + 3/2 . 22/7 r^2
320 = r^2 + 33/7 r^2 ......... Kali 7
2240 = 7r^2 + 33r^2
2240 = 40r^2
r^2 = 2240/40 = 56
Jadi luas persegi = r^2 = 56 cm^2