Question

five cubes of side 3 cm are joined together to form a cuboid find the surface area of generated cuboid

Answer 1

Heya !!!


Edge of cube (A) = 3 cm.



Length of resulting cube = 5 × 3 = 15 cm


Height of resulting cuboid = 3 cm


And,


Breadth of resulting cuboid = 3 cm



TSA of resulting cuboid = 2(lB + BH + HL)


=> 2 ( 15 × 3 + 3 × 3 + 3 × 15)


=> 2 ( 45 + 9 + 45)


=> 2 × 99


=> 198 cm².


Hence,


TSA of resulting cuboid = 198 cm².




HOPE IT WILL HELP YOU...... :-)

Answer 2

If we join 5 cubes of 3 cm, then

3
[][][][][] 3
<-15-->

Now,


Hieght of resulting cuboid = 3 cm
Breadth of resulting cuboid =3 cm
Length of resulting cuboid = (3×5) = 15 cm




Now,


Surface area of cuboid = 2(lb +bh + hl)

Here,

Surface area = 2[ (15×3)+(3×3)+(3×15)]

Surface are =2[ 45 + 9 + 45]

Surface area = 2×99

Surface area of cuboid = 198 cm²



I hope this will help you


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