Solution
L = 20cm , B = 15cm , H = 10cm
Surface area of cuboid = 2(lb + bh + hl)
= 2(20×15+15×10+10×20)cm²
= 2(300 + 150 + 200)cm²
= 2(650)cm² = 1300cm²
L = 20cm , B = 15cm , H = 10cm
Surface area of cuboid = 2(lb + bh + hl)
= 2(20×15+15×10+10×20)cm²
= 2(300 + 150 + 200)cm²
= 2(650)cm² = 1300cm²