Volume and Surface Area Questions Practice Question and Answer
8 Q: Find the area of a white sheet required to prepare a cone with a height of 21cm and the radius of 20cm.
768 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: A circular ground of radius 7 m is surrounded by a path of width 3.5 m. Find the area of path.
1218 05edf1f918c4c964f73d404ea
5edf1f918c4c964f73d404ea- 1202 sq.mfalse
- 2154 sq.mfalse
- 3192.5 sq.mtrue
- 4346.5 sq.mfalse
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Answer : 3. "192.5 sq.m"
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)?
932 05ed9d7d6f528050f91500c47
5ed9d7d6f528050f91500c47- 12afalse
- 2a\√2false
- 3$$a^2\2$$true
- 4$$a2\4$$false
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Answer : 3. "$$a^2\2$$"
Q: What is the area of a rectangle , if its diagonal s 61 cm and one of its sides is 11 cm ?
832 05ed9d016f528050f914ffaa6
5ed9d016f528050f914ffaa6- 1$$ 660cm^2$$true
- 2$$ 720cm^2$$false
- 3$$ 616cm^2$$false
- 4$$ 633cm^2$$false
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Answer : 1. "$$ 660cm^2$$"
Q: The curved surface area of a cylindrical pillar is 264 square meter and its volume is 924 cubic meters. Find the ratio of its diameter to its height.
2059 05ecf440b9eaf5347ec7914cb
5ecf440b9eaf5347ec7914cb- 17 : 6false
- 23 : 7false
- 37 : 3true
- 46 : 7false
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Answer : 3. "7 : 3"
Q: Two cones have their heights in the ratio 1:3 and the radii of their bases in the ratio 3:1. Find the ratio of their volumes?
799 05ecf3a9b79d67a247e487706
5ecf3a9b79d67a247e487706- 13:1true
- 22:1false
- 34:1false
- 45:1false
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Answer : 1. "3:1"
Q: What is total surface area of a cone where, r’ is radius and ‘l’ is slant height?
861 05eccef537bb74b48ff93a881
5eccef537bb74b48ff93a881- 1πr (l + r)true
- 22πr (l+r)false
- 3πrlfalse
- 4$$ 2πrl^2$$false
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Answer : 1. "πr (l + r) "
Q: The area of an equilateral triangle inscribed in a circle is $$ 9√3 cm^2$$ . The area of the circle is:
1986 05ecc97667bb74b48ff92cb5e
5ecc97667bb74b48ff92cb5e- 1$$ 8√3cm^2$$false
- 2$$ 13π cm^2 $$false
- 3$$ 12π cm^2 $$true
- 4$$ 36π cm^2 $$false
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