Question

The length breadth and height of a cuboid are 15cm,10cm,&20cm respectively.Find it's total surface area

Answer 1

total surface area =2( lb + bh + hl )
=2( 15×10+10×20+20×15 )
=2 ( 150+200+300 )
= 2 × 650
= 1300 a.n.s.w.e.r

Answer 2

answer

Length = 15 cm
Breadth = 10cm
Height = 20cm

Total surface area of cuboid = 2× (lb + bh+ hl )
2×( 15×10 + 10×20 + 20×15)
2 × 650
1300

$1300 {cm}^{2}$