Question

Example.4
Three cubes each edge 8 cm, are joined and forming cuboid. Find the total surface area of the cuboid.


Class -8th - Volume and Capacity - pg.228

Answer 1

Hey!

Here,
length of resulting cuboid = 3*8 = 24 cm
breadth = 8 cm
height = 8 cm

We know,
TSA = 2(lb+bh+lh)
        = 2 (24*8 + 8*8 + 24*8)
       = 896 cm²

Answer 2

896 cm.sq. Is the answer
Because edge of 3 cubes are joined so their l=24 & b=8 & h=8
Now put value in formula & get answer.