CBSE Class 10-Mathematics: Chapter –13 Surface Areas and Volumes Part 21
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Question 21:
A medicine capsule is in the shape of a cylinder with two hemispheres stuck it each of its ends. The length of the entire capsule is and the diameter of the capsule is 5 . Find its surface area.
Uniform Thickness of Cylinder
Answer:
Uniform thickness of cylinder
The length of capsule
Length of cylindrical portion of capsule
Total surface area
Question 22:
A pen stand made of wood is in the shape of a cuboid with four conical depression to hold pens. The dimensions of the cuboid are by by . The radius of each of the dimensions is and the depth is . Find the volume of the wood in the entire stand.
Answer:
Required volume volume of cuboids [V. of one depression]
Question 23:
A medicine capsule is in the shape of a cylinder with two hemispheres stuck to each of its ends. The length of the entire capsule is and the diameter of the capsule is . Find its surface area.
The Length of Capsule
Answer:
The length of capsule
Length of cylindrical portion of capsule
Total surface area
Question 24:
A spherical glass vessel has a cylindrical neck long, in diameter, the diameter of the spherical part . by measuring the amount of water, it holds, a child finds its volume to be check whether she is correct, taking the above as side measurements.
A Spherical Glass Vessel
Answer:
For cylindrical part
For spherical part:
Radius (R)
Volume of glass solid Volume of cylindrical part Volume of the spherical part