Volume and Surface Area Practice Question and Answer
8 Q: Find the area of the shaded region if the radius of each of the circle is 1 cm.
1747 15efeb190eb90be58c59608dc
5efeb190eb90be58c59608dc- 1$$ 2-{π\over3}$$true
- 2$$ \sqrt{3}-{π\over2}$$false
- 3$$ \sqrt{3}-{π}$$false
- 4$$ \sqrt{3}-{π\over4}$$false
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Answer : 1. "$$ 2-{π\over3}$$"
Q: By increasing the radius of a sphere by 50 percent, how much will the area of its surface increase?
1747 05e5cad34db545f45b2c8c42a
5e5cad34db545f45b2c8c42a- 1100%false
- 2125 %true
- 3150%false
- 4None of thesefalse
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Answer : 2. "125 %"
Q: A solid metallic sphere of radius x cm is melted and then drawn into 126 cones each of radius 3.5 cm and height 3 cm. There is no wastage of material in this process. What is the value of x?
1617 05fbe72db2e911753dd56308f
5fbe72db2e911753dd56308f- 110.5true
- 23.5false
- 37false
- 421false
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Answer : 1. "10.5"
Q: From a solid cylinder whose height is 12 cm and diameter 10 cm a conical cavity of same height and same diameter of the base is hollowed out. The volume of the remaining solid is (cm3)approximately .Π=22/7
1589 05f2d2c25b57ade01ca00086e
5f2d2c25b57ade01ca00086e- 1942.86false
- 2477.45false
- 3628.57true
- 4450.76false
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Answer : 3. "628.57"
Q: The diameter of a wheel is 14 cm. How many rotations will it take to cover a distance of 44 kilometres?
1495 05f76eadb6cd8be7b4dbab83c
5f76eadb6cd8be7b4dbab83c- 144,000false
- 288,000false
- 370,000false
- 4100000true
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Answer : 4. "100000"
Q: In the given figure, two squares shown in the figure have the arm of 12 cm and 8 cm. then find out the area of shaded part?
1460 05e4e0ec5dfffd759fd10bdc1
5e4e0ec5dfffd759fd10bdc1- 119.2true
- 218.3false
- 319.6false
- 419.8false
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Answer : 1. "19.2"
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?
1422 0600e8d0b377d750b4eb46a19
600e8d0b377d750b4eb46a19- 1117.85 m²true
- 2119.85 m²false
- 3117.35 m²false
- 4119.35 m2false
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Answer : 1. "117.85 m² "
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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