Volume and Surface Area Practice Question and Answer
8 Q: The area of triangle is half the area of square. The perimeter of the square is 224 cm. What is the area of triangle?
2150 05d4aa1bf11160f2052371576
5d4aa1bf11160f2052371576- 11856 cm2false
- 21658 cm2false
- 31558 cm2false
- 41586 cm2false
- 5None of thesetrue
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Answer : 5. "None of these"
Explanation :
given 4a=224,
a=56, so that Area of square is=a2=56*56
so that Area of Triangle is a2/2=1568
Q: The volume of a sphere and an elliptical cylinder are the same. The radius of the sphere and cylinder are 21 cm and 14 cm respectively. What is the height of the cylinder?
2143 05e3256211f73627362281733
5e3256211f73627362281733- 163 cmtrue
- 256 cmfalse
- 342 cmfalse
- 449 cmfalse
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Answer : 1. "63 cm"
Q: If a cube whose side is 7.5 cm, what will be its volume?
2138 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 radius of a semicircle is 35 cm, find its area and perimeter.
2088 05fe1bb09ce32c8585c738675
5fe1bb09ce32c8585c738675- 11040 sq.cm and 140 cmfalse
- 21925 sq.cm and 180 cmtrue
- 31890 sq.cm and 90 cmfalse
- 41730 sq.cm and 90 cm/false
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Answer : 2. "1925 sq.cm and 180 cm "
Q: If each edge of a cube is reduced by 25 percent, find the ratio of the volume of the original cube and the resulting cube?
2076 05f892f0de6aa3e1d0bd22e80
5f892f0de6aa3e1d0bd22e80- 18:1false
- 227:64false
- 364:1true
- 464:27false
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Answer : 3. "64:1"
Q: A wire of length 60 m is used to enclose a field which is in the shape of a right - angled triangle. The area of the field is 150 m2 then, the largest side of the field has a length of:
2056 0600a8dbbbaeda263c3c88998
600a8dbbbaeda263c3c88998- 130 meterfalse
- 220 meterfalse
- 325 metertrue
- 415 meterfalse
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Answer : 3. "25 meter"
Q: A field is in the form of an equilateral triangle of side 100 m. A horse is tied to a vertex of the field, with a 15 m long rope. Over what area can the horse graze?
2055 0600e8d0b377d750b4eb46a19
600e8d0b377d750b4eb46a19- 1117.85 m²true
- 2119.85 m²false
- 3117.35 m²false
- 4119.35 m2false
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Answer : 1. "117.85 m² "
Q: The ratio of the radii of two wheels is 3: 4, then the ratio of their circumferences will be.
2051 05f97fe6cf6ce7f2367fe6e29
5f97fe6cf6ce7f2367fe6e29- 12 : 3false
- 24 : 3false
- 33 : 4true
- 43 : 5false
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