Question

three cubes of metal with edges 5 cm 4 cm and 3 cm respectively are melted to form a single cube find the lateral surface area of the new cube formed​

Answer 1

Step-by-step explanation:

Volume of 3 cubes

• (3^3)+(4^3)+(5^3)
• 216cm^3

Volume of 3cubes= Volume of new cube

• 216=a^3
• a= ^3√216
• a=6cm.

LSA of cube=4a^2

• 4×6^2
• 4×36
• 144cm^2

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