Question

Three cubes each of volume 64cm^3 are joined end to end to form a cuboid . Find the total surface area of the cuboid so formed ​

Answer 1

Answer:

224 sq. cm.

Step-by-step explanation:

why

Volume of each cube = 64 cm3

Thus, side of each cube = 4 cm.

So, the dimensions of cuboid are 4 4 12.

Surface area of the cuboid = 2[4 4 + 4 12 + 12 4]

= 224 sq. cm.

Answer 2

Answer:

224 cm2

Step-by-step explanation:

Let l be the side of the cube and L, B, H be the dimensions of the cuboid 

Since l3 = 64 cm3 ∴ l = 4 cm 

Total surface area of cuboid is 2[LB + BH + HL], 

Where L = 12, B = 4 and H = 4 = 2 (12 × 4 + 4 × 4 + 4 × 12) cm2 = 224 cm2

Therfore, total surface area of cuboid is 224 cm2