RRB Junior Engineer / DMS / CMA 2019 · Question 84 of 3719
Mathematics - Mensuration
As we know, 3 Volume of hemisphere = (2/3) πr (2/3) πr³ = 19404 --- (1) The curved surface area of the hemisphere = 2 πr² 2 πr² = 2772 … (2) Dividing (1) by (2), [(2/3) πr³]/ [2 πr²] = 19404/2772 r/3 = 7 r = 21 cm
Source: RRB JE 2019 CBT-1 (24-May-2019 Shift-1) — ixambee compilation with answer key and solutions · reliable-secondary
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