Question

Please solve this question quickly.

Answer 1

Step-by-step explanation:

i) Surface are of cube = 6(l^2) = 6(8^2) = 6*64 = 384 square cm

ii) Surface area of cuboid(brick) = 2 (lb+bh+hl)

               = 2[(9*5) + (5*3) + (9*3)] = 2(45+15+27) = 2(87) = 174 square cm

iii) Surface are of box = 2(lb+bh+hl) = 2[(150*40) + (40*70) + (150*70)]

       = 2(6000+2800+10500) = 2(19300) = 38600 square cm

Please mark as brainliest if it is helpful