Luas permukaan sebuah benda berbentuk setengah bola pejal adalh 108(phi)cm volume bend itu adalh
ananekusuma21
L 1/2 bola = 1/2 x 3 x phi x r² 108 phi = 3/2 phi x r² 108 x 2 = 3 x r² 216 = 3 x r² r² = 216/3 = 72 r = √72 r = √36.2 r = 6√2 cm1c) jadi, V 1/2 bola = 1/2 x 4/3 x phi x r x r x r = 2/3 x phi x 6√2 x 6√2 x 6√2 = 2/3 x phi x 216 x 4√2 = 576√2 phi cm kubik
108 phi = 3/2 phi x r²
108 x 2 = 3 x r²
216 = 3 x r²
r² = 216/3 = 72
r = √72
r = √36.2
r = 6√2 cm1c)
jadi, V 1/2 bola = 1/2 x 4/3 x phi x r x r x r
= 2/3 x phi x 6√2 x 6√2 x 6√2
= 2/3 x phi x 216 x 4√2
= 576√2 phi cm kubik