A certain spherical ball of diameter 4 cm weighs
8 kg. Find the weight of a spherical ball of the same material whose inner and outer diameters are 8 cm and 10 cm
Answers
Answered by
1
Answer:
for 8 cm diameter,it weighs 16 kg and for 10 cm diameter it weighs 18 kg
Answered by
1
Answer:
Given, internal diameter =8cm and external diameter =10cm
Volume of a hollow sphere of outer Radius R and inner radius r =
3
4
π(R
2
−r
3
)
Inner radius of the spherical shell =
2
8
=4cm
Outer radius of the spherical shell =
2
10
=5cm
Hence, volume of spherical shell =
3
4
×π×(5
3
−4
3
)=
3
4
×π×61=
3
244π
cm
3
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