Question

pls frnd helpnme out i will ark as a brainlest​

Answer 1

Answer:

Given: Diameter of marble = 1.4 cm

Diameter of cylindrical beaker = 7 cm

Height of water level = 5.6 cm

Formula used:

The volume of sphere =

Volume of cylinder = πr2h

Explanation:

diameter of a marbles = 1.4 cm

∴ Radius of marble =

= 0.7 cm

So, volume of one marble =

Also, given diameter of beaker = 7 cm

∴ Radius of beaker =

= 3.5 cm

Height of water level raised = 5.6 cm

∴ Volume of the raised water in beaker = π r2 h

= π (3.5)2 × 5.6

= 68.6 π

Let n marbles be dropped into the beaker,

Hence n × volume of marble = volume of water raised

⇒

⇒

⇒ n = 150

Hence the number of marbles required are 150.