" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
252 = 7x × 4x
252 = 28x²
x² = 252/28
x² = 9
x = √9
x = 3
panjang = 7x = 7(3) 21 cm
lebar = 4x = 4(3) = 12 cm