the dimensions of a piece of iron in the shape of a cuboid are 270 cm × 100 cm × 64 cm.If it is melted and react into a cube,then the surface area of cube will be
Answers
Answer:
86400cm²
Step-by-step explanation:
Volume of the cuboid=270x100x64= 1728000cm³
Side of the cube =∛(1728000) = 120cm
Total surface area of a cube = 6a² =6x120² = 86400cm²
Answer:
Surface Area of the cube = 86400 cm²
Step-by-step explanation:
Dimensions of the cuboid = 270 cm × 100 cm × 64 cm
Length = 270 cm , Width = 100 cm , height = 64 cm
Volume of cuboid = Length × Width × Height
= 270 cm × 100 cm × 64 cm
= 1728000 cm³
Cuboid is melted to form the cube. so their volume will be same.
⇒ Volume of cube = Volume of cuboid
⇒ Volume of cube = 1728000 cm³
⇒ Side³ = 1728000 cm³
⇒ side of the cube = 120 cm
Now, Surface area of the cube = 6 × side²
⇒ Surface Area of the cube = 6 × 120²
⇒ Surface Area of the cube = 86400 cm²