Volume and Surface Area Questions Practice Question and Answer
8 Q: The area covered by a square is 308 square cm. The length of the diagonal of the square is.
1537 05f9be3d8d433054b5ca011ed
5f9be3d8d433054b5ca011ed- 116 cmfalse
- 228 cmtrue
- 324 cmfalse
- 422 cmfalse
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Answer : 2. "28 cm "
Q: A polygon has 14 sides then find out No. of diagonals in that polygon.
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5e8afd2bbd0d850c66cb13a2- 175false
- 276false
- 377true
- 480false
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Answer : 3. "77 "
Q: From a circle of radius a, a sector, which subtend an angle π/5 at the centre has been cut off. The perimeter of the remaining part of the circle is
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5f8016aa0a69ab3becc7d2bf- 12πafalse
- 2$$ {π\over 5}{a}$$false
- 3$$ {7π\over 5}{a}$$false
- 4$$ {9π\over 5}{a}$$true
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Answer : 4. "$$ {9π\over 5}{a}$$"
Q: What is the total CSA of cone whose radius is 3 cm and height is 4 cm?
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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: From a right cone of height h and with base radius r a cone has been cut of from the centre of the height. The volume of remaining frustum of the cone is.
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5f8016fb0a69ab3becc7d418- 1$$ {1\over3}π{r^{2}}h$$false
- 2$$ {1\over24}π{r^{2}}h$$false
- 3$$ {7\over24}π{r^{2}}h$$true
- 4$$ {1\over8}π{r^{2}}h$$false
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Answer : 3. "$$ {7\over24}π{r^{2}}h$$"
Q: A spherical ball of lead 3 cm in diameter is melted and recast into three spherical balls The diameter of two of these are 1.5 cm and 2 cm respectively. The diameter of the third ball is
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60113124af82aa3010a223e5- 11.4 cmfalse
- 21.8 cmfalse
- 32.1 cmfalse
- 42.5 cmtrue
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Answer : 4. "2.5 cm"
Q: The curved surface area of cylindrical pillar is $$ {264 m^{2}}$$ and its volume is $$ {924 m^{3}}$$. Find the ratio of its diameter to its height.
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63d0da736071cf76fc19e78a- 13 : 7false
- 27 : 3true
- 36 : 7false
- 47 : 6false
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Answer : 2. "7 : 3"
Q: In the figure given below, AD bisects ∠BAC. If the area of ΔABD=40 cm2 and AC=3AB, then the area of ΔABC:
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5f59ce72b772fe2f8b222a04- 1$$ {150 \ cm^{2}}$$false
- 2$$ {100 \ cm^{2}}$$false
- 3$$ {120 \ cm^{2}}$$true
- 4$$ {160 \ cm^{2}}$$false
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