c) A test tube is cylindrical shape with
hemispherical base of diameter 2cm as shown
in figure 2. If it is filled with chemical
solution upto the height of Tem, then find
the volume of chemical solution in the test
tube-
1) 20/3 x22/7 cm3
2) 8x22/7 cm3
3) 20 /5x22/7cm3
4) 10/3x22/7cm3
Answers
Answered by
1
Step-by-step explanation:
The bottom portion of a test tube has the shape of a hemisphere, while the portion above this is cylindrical in shape.
Radius of hemisphere =
2
20
mm=1 cm
∴ Volume of hemisphere =
3
2
πr
3
=
3
2
×3.14×(1)
3
=2.09 cm
3
Now, height of the cylindrical portion
=15−1=14 cm
Volume of the cylindrical portion =πr
2
h
=3.14×(1)
2
×14
∴ Capacity of the test tube = Volume of cylindrical portion + Volume of hemispherical portion
=43.96+2.09
=46.05 cm
3
Thus, the capacity of the test tube is 46.05 cm
3
.
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Answered by
1
Answer:
46.05 is the capacity of the test tube
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