1.hitunglah luas permukaan balokbjika diketahui a.V=24cm,p=4cm,dan l=3cm b.V=315cm,p=9cm,dan l=7cm pake cara ya

a. t= 24 : (4x3) =2
Lp= 2x (4x3 + 3x2. + 2x4) =52

a) V = p . l . t
24 = 4 . 3 . t => t = 24/12 = 2
Lp = 2(pl + pt + lt) = 2(4.3 + 4.2 + 3.2) = 2(12 + 8 + 6) = 2(26) = 52 cm^2

b) V = p . l . t
315 = 9 . 7 . t => t = 315/63 = 5
Lp = 2(pl + pt + lt) = 2(9.7 + 9.5 + 7.5) = 2(63 + 45 + 35) = 2(143) = 286 cm^2