Two cubes, each of edge 5 cm, are joined face to face. Find the surface area of the cuboid thus formed.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e. 250 cm2.
Each cube has an edge length of 5 cm
Length of cuboid(l) = 5 + 5 = 10 cm
Breadth(b) = 5cm, and Height(h) = 5 cm
Now,
The surface area of a cuboid(SA) = 2(lb + bh + hl)
⇒ SA = 2((10 × 5) + (5 × 5) + (5 × 10)
⇒ SA = 2(50 + 25 + 50)
⇒ SA = 2 × 125 = 250 cm2
So, The surface area of the cuboid is 250 cm2