V = a*b*c V = 45*12*2 = 90*12 = 1080 cm³
P = 4*a + 4*b + 4*c P = 4*45 + 4*12 + 4*2 = 180+48+8 = 136 cm
S = 2*S1 + 2*S2 + 2*S3
S1 = a*b S2 = b*c S3 = a*c
S = 2*45*12 + 2*12*2 + 2*45*2 = 1080 + 48 + 180 = 1308 cm²
V = a*b*c V = 45*12*2 = 90*12 = 1080 cm³
P = 4*a + 4*b + 4*c P = 4*45 + 4*12 + 4*2 = 180+48+8 = 136 cm
S = 2*S1 + 2*S2 + 2*S3
S1 = a*b S2 = b*c S3 = a*c
S = 2*45*12 + 2*12*2 + 2*45*2 = 1080 + 48 + 180 = 1308 cm²