Question

find the LSA and TSA of a cuboid of length 30 cm breadth 40 centimetre and height 20 CM​

Answer 1

Answer:

LENGTH(l)=80 cm

BREADTH(b)=40 cm

HEIGHT(h)=20 cm

TSA OF CUBOID = 2(lb+bh+lh)

= 2[(80*40)+(40*20)+(20*80)] cm²

=2[3200+800+1600] cm²

=2[5600] cm²

=11200 cm²

LSA OF CUBOID=2(l+b)h

=2(80+40)20 cm²

=2(120)20 cm²

=40(120) cm²

=480 cm²