Question

Four cubes , eachof edge 3cm , long are placed together .find the surface area of the cuboid

Answer 1

Answer:

162cm^2

Step-by-step explanation:

Total Length formed = 3+3+3+3 = 12cm

Height = 3cm

Breadth = 3cm

TSA of cuboid = 2lb+2lh+2hb

TSA = 2(lb+lh+hb) = 2(36+36+9) = 2(81) = 162

The Total Surface Area is 162 cm^2

Answer 2

Answer:

Step-by-step explanation:

Since they are put together therefore length of cuboid = 9cm

Breadth = Height = 3cm

Therefore area = 2(lb + bh + lh)

⇒ 2(9*3 + 3*3 + 9*3)

⇒2(27 + 9 + 27)

⇒2*63=126cm²

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