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## Answers

Vol. of hemisphere= π r³

⇒ratio=27:125

π (r₁)³: π (r₂)³

⇒(r₁)³:(r₂)³=27:125

⇒

⇒ratio=27:125

π (r₁)³: π (r₂)³

⇒(r₁)³:(r₂)³=27:125

⇒

**r₁:****r₂=3:5**
Volume is ⅔πr³

so ⅔πr1³: ⅔πr2³=27:125

r1: r2 = 3:5

Ans. 3:5

so ⅔πr1³: ⅔πr2³=27:125

r1: r2 = 3:5

Ans. 3:5