Question

A cylindrical vessel of diameter 9 cm has
some water in it. A cylindrical iron piece
of diameter 6 cm and height 4.5 cm is
dropped in it. After it was completely
immersed, what is the rise in the level of
water?
(A) 0.8 cm (B) 0.5 cm
(C) 0.1 cm (D) 0.3 cm​

Answer 1

Answer:

the initial volume of cylindrical vessel = π (9/2)²h

the volume of cylindrical iron piece = π3²(4.5)

Let the rise in the water level be

A/q,

π (9/2)²h = π3²(4.5)

9h = 4*4.5

h = 2cm