Question

If the length, breadth and height of a cuboid are 2m, 2m
and 1m respectively, then the surface area in m square will be
Answer with explanation
will be marked brainliest​

Answer 1

Answer:

$16m^{2}$

Step-by-step explanation:

let us assume length as 'l'

breadth as 'b'

height as 'h'

total surface area of a cuboid is 2(l*b+b*h+h*l)

= 2(2*2+1*2+1*2)

= 2(4+2+2)

= 2(8)

= 2*8

=$16m^{2}$

i hope it is a correct answer and please mark it as a brainliest

NOTE :- SURFACE AREA IS REFFERED TO TOTAL SURFACE AREA

Answer 2

Given: Length of cuboid (l) = 2m

           Breadth of cuboid (b) = 2m

           Height of cuboid (h) = 1m

To Find: Surface area of the cuboid

Solution:

Surface area of cuboid = ( 2lb + 2lh + 2bh ) m²

                                      = 2 (lb + lh + bh) m²

                                      = 2 (2 $\times$ 2 + 2 $\times$ 1 + 2 $\times$ 1 ) m²

                                      = 2 ( 4 + 2 + 2) m²

                                      = ( 2 $\times$ 8 ) m²

                                      = 16 m²

Answer: The surface area of the cuboid is 16 m².

Note

• A cuboid has 6 sides and each side is in the shape of a rectangle. The formula for the area of a rectangle is length multiplied by breadth.

• Thus, we need to find the area of six surfaces to find the area of the entire cuboid.

• When we are multiplying 2 with length multiplied by breadth, we are finding the area of the two opposite surfaces. Simultaneously, this is done with all the other surfaces. Thus, a total of six areas are found and then added.

• This gives us the surface area of the cuboid.