Question

Marbles of diameter 1.4 cm are dropped into a cylindrical beaker containing
some water and are fully submerged. The diameter of the beaker is 7 cm. Find
how many marbles have been dropped in it if the water rises by 5.6 cm.
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Answer 1

Answer:

150

Step-by-step explanation:

for marbles (sphere),

diameter= 1.4cm

radius (r) = 0.7

for beaker (cylinder),

diameter=7cm

radius (R)= 3.5cm

height= 5.6 cm

no.of marbles = volume of cylinder/ volume of sphere

= π R X R X h/ 4/3 π r X r X r

= π X 3.5 X 3.5 X 5.6/ π X 4/3 X 0.7

X 0.7 X 0.7

after dividing all this u will get ur answer...