Volume and Surface Area Questions Practice Question and Answer
8 Q: Area of a rectangle is equal to the area of a circle whose radius is 14 cm. If the breadth of the rectangle is 22 cm, what is its length?
1474 05fd9c2a5079b5044b465140d
5fd9c2a5079b5044b465140d- 124 cmfalse
- 228 cmtrue
- 326 cmfalse
- 4Cannot be determinedfalse
- 5None of thesefalse
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Answer : 2. "28 cm"
Q: A hollow iron pipe is 21 cm long and its exterior diameter is 8 cm. If the thickness of the pipe is 1 cm and iron weights $$ 8 g/cm^3 $$, then the weight of the pipe ($$ π= {22\over7}$$) is.
1472 05ec5fa30980ff60a66c36242
5ec5fa30980ff60a66c36242- 13.696 kgtrue
- 23.6 kgfalse
- 336 kgfalse
- 436.9 kgfalse
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Answer : 1. "3.696 kg "
Q: A right circular cylinder is formed by rolling a rectangular sheet of metal of length 44 cm and breath 20 cm along its length. The volume of cylinder is_
1466 05f2cfd3221de6a117aeff4a7
5f2cfd3221de6a117aeff4a7- 13080true
- 24090false
- 34095false
- 45000false
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Answer : 1. "3080 "
Q: A field roller, in the shape of a cylinder, has a diameter of 1 meter and length of $$ {1}{1\over4}$$ meter. If the speed at which the roller rolls is 14 revolutions per minute, then the maximum area ( in m2) that it can roll in 1 hour is:
1461 05f40de25b8958f14fa2b44b4
5f40de25b8958f14fa2b44b4- 13600false
- 23560false
- 33960false
- 43300true
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Answer : 4. "3300"
Q: An iron pipe 20 cm long has exterior diameter 25 cm. If the thickness of the pipe is 1 cm, then the whole surface area of the pipe?
1453 05f59d091b772fe2f8b223a57
5f59d091b772fe2f8b223a57- 1$$ {3168\ cm^{2}}$$true
- 2$$ {3186\ cm^{2}}$$false
- 3$$ {3200\ cm^{2}}$$false
- 4$$ {3150\ cm^{2}}$$false
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Answer : 1. "$$ {3168\ cm^{2}}$$"
Q: Find the area of triangle whose medians are 8 cm, 15 cm and 17 cm respectively?
1451 060a7a50dc7f1592dd0d64cf3
60a7a50dc7f1592dd0d64cf3- 1$$20 cm^2$$true
- 2$$15 cm^2$$false
- 3$$24 cm^2$$false
- 4$$28 cm^2$$false
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Answer : 1. "$$20 cm^2$$"
Q: The length of the diagonal of a square is 'a' cm. Which of the following represents the area of the square (in sq. cm)?
1450 05ed9d7d6f528050f91500c47
5ed9d7d6f528050f91500c47- 12afalse
- 2a\√2false
- 3$$a^2\2$$true
- 4$$a2\4$$false
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Answer : 3. "$$a^2\2$$"
Q: In the given figure if each of the outer circles have radii ‘R’, then the radius of the inner circle will be:
1450 060b70e3f2f692872ec8cf7cc
60b70e3f2f692872ec8cf7cc- 1$$ {2\over ({\sqrt{2}+1})R}$$false
- 2$$ {1\over {\sqrt{2}}}R$$false
- 3$$ {(\sqrt{2}-1)R}$$true
- 4$$ {\sqrt{2}R}$$false
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