" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
t = 40 cm
π = 22/7
Dit : a . r ...?
b. Luas sisi tabung ..?
Jwb :
a. Ls = 2πrt
8800 = 2 . 22/7 . r . 40
8800 = 1760/7 r
r = 8800 : 1760/7
= 8800 . 7/1760
= 35 cm
b. L sisi tabung = 2πr (r+t)
= 2 . 22/7 . 35 (35 + 40)
= 2 . 22/7 . 35 . 75
= 16500 cm²
2. 22/7 . r . 40 = 8800
r = 110 . 7 / 22
r = 770 cm / 22
r = 35 cm
B. =2.Phi.r (r+t)
= 2. 22/7. 35 (35+40)
= 220.75 cm
= 16.500 cm persegi