Question

27 iron spheres each of radius 2 cm are melted to form a new sphere what will be the surface area of new sphere

Answer 1

Answer:

1356.48cm^2

Step-by-step explanation:

A=4 * Pi  * 2cm^2

A=4 * Pi * 4cm^2

A=4 * 12.56cm^2

A=50.24cm^2

50.24cm^2 * 27 spheres = 1356.48 cm^2