" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
L sisi bola = 616
4.phi.r² = 616
4.22/7.r² = 616
88/7.r² = 616
r² = 616 : 88/7
r² = 616 . 7/88
r² = 7.7
r² = 49
r = √49
r = 7 cm
maka d = 2.r = 2.7 = 14 cm
2)
L belahan bola padat
= 3.phi.r²
= 3.3,14.6²
= 3.3,14.36
= 339,12 cm²
3)
d = 14 m → r = 7 m
4)
d = 20 cm → r = 10 cm
maka :
V kerucut
= 1/3.phi.r².24
= 1/3.3,14.10².24
= 8.3,14.100
= 8 . 314
= 2512 cm kubik
5)
t = √(25²-7²)
= √(625-49)
= √576
= 24 cm
maka :
V kerucut
= 1/3.phi.r².t
= 1/3.22/7.7².24
= 8.22/7.49.
= 8.22.7
= 1232 cm kubik
6) V kerucut = 314
1/3.phi.r².t = 314
1/3.3,14.5².t = 314
1/3.3,14.25.t = 314
78,5.t = 314 . 3
78,5.t = 942
t = 942:78,5
t = 12 cm
maka :
s = √(5²+12²)
= √(25+144)
= √169
= 13 cm
jdikan jwbn trbaik klo anda puas dg jwbnn saya