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1000 solid spherical balls each of radiu...

1000 solid spherical balls each of radius 0.6 cm are melted and recast into a single ball. What is the surface area (in `cm^2`) of ball so formed?
प्रत्येक 0.6 सेमी त्रिज्या वाली 1000 ठोस गोलीय गेंदों को पिघलाकर एक गेंद बनाई जाती है | इस प्रकार बनी गेंद का पृष्ठ क्षेत्रफल ( वर्ग सेमी में ) क्या होगा ?

A

`144 pi`

B

`128 pi`

C

`124 pi`

D

`108 pi`

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