Question

can someone help me in this question​

Answer 1

Step-by-step explanation:

We know that, total surface area of a cuboid= 2(lb+bh+hl)

This implies, the total surface area of the box=

2(lb+bh+hl)-lb

Where, lb is the area of the lid.

So,TSA of the box= 2(bh+hl)+lb

Hence, TSA of the box= 2{(1*0.5)+(0.8*0.5))

+(1*0.8)

=2(0.5+0.4)+0.8

=1.8+0.8-2.6 m²

Hence, the total surface area of the box is 2.6m^2

Answer 2

We know that, total surface area of a cuboid= 2(lb+bh+hl)

This implies, the total surface area of the box=

2(lb+bh+hl)-lb

Where, lb is the area of the lid.

So,TSA of the box= 2(bh+hl)+lb

Hence, TSA of the box= 2{(1*0.5)+(0.8*0.5))

+(1*0.8)

=2(0.5+0.4)+0.8

=1.8+0.8-2.6 m²

Hence, the total surface area of the box is 2.6m^2