" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
L trapesium = [(LM + KN) . t ] / 2
L trapesium = [(58 + 42) . 21] / 2
L trapesium = 1050 cm^2
L 1/2 Lingkaran = 1/2 . 22/7 . 441
L 1/2 Lingkaran = 693 cm^2
Jadi , Luas daerah Arsiran :
= L 1/2 trapesium - L 1/2 Lingkaran
= 357 cm^2
Nomor 4 [][][]
L tabung = phi . r . r . t
3388 = 22/7 . r^2 . 22
3388 = 484/7 . r^2
r = 7 cm