Whats the surface area of this rectagular prism?

Question

length=6cm
width=4cm
height=5cm

Answer 1

Lateral Surface Area:
Front = 5 x 6 = 30 (2 needed for front & back)
Side = 5 x 4 = 20 (2 needed for both sides)
LSA = 2(30) + 2(20) = 100 square cm

Top = 4 x 6 = 24 (2 needed for top & bottom)

Total Surface Area = 100 + 2(24) = 148 square cm

Answer 2

T = 2(ab + ac + bc)

T = 2((6 * 4) + (6 * 5) + (4 * 5))
T = 2(24 + 30 + 20)
T = 2(74)
T = 148

ANS : 148cm^2