Question

Find the total surface area of a cuboid. Length = 6.5 cm , Breadth = 5.5 cm, Height = 3 cm

Answer 1

Answer:

The total surface area of a cuboid is 143.5 cm²

Step-by-step explanation:

Length of cuboid (l) = 6.5 cm

Breadth (b) = 5.5 cm

Height (h) =3 cm

Total surface area =

                                     $2(lb+bh+lh)\\ \\ =2( 6.5 \cdot 5.5 + 5.5 \cdot 3 +3 \cdot 6.5)\\ \\ =2(35.75+16.5 +19.5)\\ \\ =2(71.75)=143.5$

Answer 2

Answer:

The total surface area of a cuboid is 143.5 sq. cm.

Step-by-step explanation:

Given: Length (l) = 6.5 cm ,

Breadth (b) = 5.5 cm,

Height (h) = 3 cm

Find the total surface area of a cuboid.

Formula: total surface area of a cuboid=  2(lb + bh + lh)

Total surface area of a cuboid=  2(lb + bh + lh)

= 2[6.5 × 5.5 + 5.5 × 3 + 6.5 × 3]

= 2[35.75 + 16.5 + 19.5]

= 2[71.75]

= 143.5 sq. cm

So, the total surface area of a cuboid is 143.5 sq. cm.