bangun balok diketahui panjang 12 cm lebar 9 cm tinggi 7 cm a. volume balok b luas permukaan

p =12 cm
l = 9 cm
t = 7 cm

a. v = p × l × t
= 12 × 9× 7
= 756 cm3

b. Lp = 2 ( pl + pt + lt)
= 2 ( 12 × 9 + 12 × 7 + 9 × 7)
= 2 (108 + 84 + 63)
= 2 (255)
= 510 cm2

v balok = p.l. t
= 12.9.7
= 756 cm ^3
L balok = 2 (pl + pt + lt.)
= 2( 12.9 + 12.7 + 9.7)
=2 ( 108 + 84 + 63)
= 2.255
= 510 cm ^2
semoga bermanfaat dan membantu