Volume and Surface Area Practice Question and Answer
8 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:
1014 05f40de25b8958f14fa2b44b4
5f40de25b8958f14fa2b44b4- 13600false
- 23560false
- 33960false
- 43300true
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Answer : 4. "3300"
Q: The area of trapezium is 21 square cm, the distance between the parallel sides is 3 cm and one of the parallel sides is 8.3 cm. What is the length of the other parallel side ?
2898 15e4667b365b2ec50e42a778f
5e4667b365b2ec50e42a778f- 112.7 cmfalse
- 27.7 cmfalse
- 310.7 cmfalse
- 45.7 cmtrue
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Answer : 4. "5.7 cm"
Q: Find the area of a white sheet required to prepare a cone with a height of 21cm and the radius of 20cm.
779 05ee9a0a9109b5d6e01625396
5ee9a0a9109b5d6e01625396- 1$$ {3080}cm^2$$true
- 2$$ {2300}cm^2$$false
- 3$$ {3460}cm^2$$false
- 4$$ {3600}cm^2$$false
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Answer : 1. "$$ {3080}cm^2$$"
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?
1314 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: What is the volume of a cube whose side is 7.5 cm?
1119 05e325343d0aa6f23a8fc4412
5e325343d0aa6f23a8fc4412- 1421.875 cm3true
- 2759.375 cm3false
- 3631.81 cm3false
- 4210.94 cm3false
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Answer : 1. "421.875 cm3"
Q: Diameter of a cycle wheel is 14 cm. A cyclist takes 30 minutes to reach a destination at a speed at 11 km/h. How many revolutions will the wheel make during the journey?
2316 15e4669b573b6222f383a033b
5e4669b573b6222f383a033b- 112500true
- 215000false
- 317750false
- 420000false
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Answer : 1. "12500"
Q: What is the total CSA of cone whose radius is 3 cm and height is 4 cm?
811 05e9d2b8b772f97276f50ca91
5e9d2b8b772f97276f50ca91- 1$$ { 24 π cm^2}$$true
- 2$$ { 25 π cm^2}$$false
- 3$$ { 28 π cm^2}$$false
- 4$$ { 20 π cm^2}$$false
- 5None of thesefalse
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Answer : 1. "$$ { 24 π cm^2}$$"
Q: One side of the rectangular ground is 8m and its diagonal is 17m. Find the area of the ground?
883 05ee9a728bc81cb2528ec0497
5ee9a728bc81cb2528ec0497- 1150 m²false
- 2140 m²false
- 3130 m²false
- 4120 m²true
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