Question

a cuboid whose external majors are 80cm 30 cm and 40 cm the base, side face and back face is to be covered with a paper find the area of the people needed

Answer 1

TSA of cuboid = 2(lb + bh + hl) 

= 2 ( 80 x 30 + 30 x 40 + 40 x 80 ) 

= 2 ( 2400 + 1200 + 3200 ) 

= 2 x 6800 

= 13600 cm²