Volume and Surface Area Practice Question and Answer
8 Q: The ratio of the areas of two circles is 16: 25. What will be the ratio of their circumferences?
1041 05f76bab1e487e60dced7c88c
5f76bab1e487e60dced7c88c- 14 : 5true
- 23 : 2false
- 34 : 9false
- 49 : 4false
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Answer : 1. "4 : 5 "
Q: The perimeter of a circle is equal to the square perimeter. What will be the ratio of their areas?
714 05f76ba624637db732848783f
5f76ba624637db732848783f- 14 : 1false
- 211 : 7false
- 314:11true
- 411:14false
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Answer : 3. "14:11"
Q: 42 cm a circular wire of diameter is folded into a rectangle whose sides are in the ratio 6: 5. What will be the area of the rectangle?
770 05f76b9f853f6013e85bed71d
5f76b9f853f6013e85bed71d- 1900 sq. cm.false
- 21080 sq. cm.true
- 31000 sq cmfalse
- 44320 sq. cm.false
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Answer : 2. "1080 sq. cm."
Q: If the circumference of a circle is 4.4 m, then the area of the circle (in m2) is :
2658 05f6d8c60ec13dd748003bbcd
5f6d8c60ec13dd748003bbcd- 149/πfalse
- 249πfalse
- 34.9πfalse
- 4None of thesetrue
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Answer : 4. "None of these "
Q: A solid cube, whose diagonal is $$ 128 {\ sqrt {2}} \ cm $$, is molded to form a cuboid. The length and width of the cuboid are 512 cm and 160 cm, respectively. What is the height of the cuboid?
963 05f6d8732f9079a64e3bedd4b
5f6d8732f9079a64e3bedd4b- 116 cmfalse
- 225.6 cmtrue
- 320.8 cmfalse
- 416.4 cmfalse
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Answer : 2. "25.6 cm"
Q: What will be the area (cm2) of the curved surface of an elliptical cylinder whose height and diameter are 10 cm and 8 cm respectively?
782 05f6d79f8f9079a64e3be1fc4
5f6d79f8f9079a64e3be1fc4- 120 πfalse
- 280 πtrue
- 3160 πfalse
- 440 πfalse
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Answer : 2. "80 π"
Q: If a cube whose side is 7.5 cm, what will be its volume?
1422 05f645196a372fb53671224cc
5f645196a372fb53671224cc- 1$$ {421.875\ cm^{3}}$$true
- 2$$ {759.375\ cm^{3}}$$false
- 3$$ {631.810\ cm^{3}}$$false
- 4$$ {210.94\ cm^{3}}$$false
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Answer : 1. "$$ {421.875\ cm^{3}}$$ "
Q: The heights of a cone, cylinder and hemisphere are equal. If their radii are in the ratio 2:3:1, then the ratio of their volumes is:
883 05f59cf9bb772fe2f8b2230a0
5f59cf9bb772fe2f8b2230a0- 12:9:2false
- 24:9:1false
- 34: 27:2true
- 42 : 3: 1false
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