Question

a solid cone of base radius 9 cm and height 10 cm is lowered into a cylindrical jar of radius 10cm which contains water sufficient to submerged the cone completely find the rise in water level in the jar​

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Answer:

the rise in water level in the jar is 2.7 cm

Step-by-step explanation:

given: cone--- radius = 9 cm and height = 10 cm

        cylinder radius = 10 cm

to find: rise in the water level

volume of cone = $\frac{1}{3}$πr²h

volume of solid cone =  $\frac{1}{3}$π × 9²× 10

                                    = 270π cm³

consider the height of the cylinder to be 'h'

volume of cylinder = πr²h

volume of rise in water level = volume of solid cone

then, π× 10²× h = 270π

100πh = 270π

h= $\frac{270\pi}{100\pi}$

h = 2.7 cm

hence, rise in water level in the jar is 2.7 cm