Volume and Surface Area Practice Question and Answer
8 Q: A straight line parallel to the base QR of the ∆PQR intersect PQ and PR at the points S and T respectively. If the area of the ∆PQT be 36 cm2 then area of the ∆PRS is:
727 060952c6b1a490e0a05cdf807
60952c6b1a490e0a05cdf807- 1$$ {18 {\ cm^{2}}}$$false
- 2$$ {36 {\ cm^{2}}}$$true
- 3$$ {28 {\ cm^{2}}}$$false
- 4$$ {48 {\ cm^{2}}}$$false
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Answer : 2. "$$ {36 {\ cm^{2}}}$$"
Q: A regular hexagon has a side of 4 cm. Find its area. (in sq. cm)
911 0609528c61a490e0a05cde328
609528c61a490e0a05cde328- 1$$ {24\sqrt{3}}$$true
- 2$$ {18\sqrt{3}}$$false
- 3$$ {36\sqrt{3}}$$false
- 4None of thesefalse
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Answer : 1. "$$ {24\sqrt{3}}$$"
Q: Three solid metallic sphere whose radii are 3cm, x cm and 18cm respectively, are melted and recast into a single solid sphere of diameter 38cm. Then find the total surface area of the sphere with radius x cm?
766 06066d1b5ffdc341493f35c4d
6066d1b5ffdc341493f35c4d- 1300 πfalse
- 2400 πtrue
- 3100 πfalse
- 4200 πfalse
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Answer : 2. "400 π "
Q: A cylindrical well of depth 21 m with internal radius of 13 m is dug up. The mud, so detained, is spread evenly to form a platform of dimension 52 × 13.2. What is the height of the platform?
923 06058670a9982dc053f987d21
6058670a9982dc053f987d21- 162.5 mfalse
- 237.5 mtrue
- 313.4 mfalse
- 418.2 mfalse
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Answer : 2. "37.5 m"
Q: The lengths of the parallel sides of a trapezium are 51 cm and 21 cm, and that of each of the other two sides is 39 cm. what is the area ( in cm2) of the trapezium?
911 0605324a74999e13f2a6d1e1b
605324a74999e13f2a6d1e1b- 11206false
- 21152false
- 31260false
- 41296true
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Answer : 4. "1296"
Q: A conical vessel whose internal base radius is 18 cm and height 60 cm is full of a liquid. The entire liquid of the vessel is emptied into a cylindrical vessel with internal radius 15 cm. The height (in cm) to which the liquid rises in the cylindrical vessel is:
750 06053169aa37d522d6c196037
6053169aa37d522d6c196037- 130.2 cmfalse
- 228.8 cmtrue
- 327 cmfalse
- 424 cmfalse
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Answer : 2. "28.8 cm"
Q: The volume of a solid right circular cylinder is 5236 cm3, and its height is 34 cm. What is its curved surface area (in cm2)?
802 06051cb6aa37d522d6c1528d1
6051cb6aa37d522d6c1528d1- 11496true
- 21573false
- 31650false
- 41804false
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Answer : 1. "1496"
Q: A right circular cone of largest volume is cut out from a solid wooden hemisphere. The remaining material is what percentage of the volume of the original hemisphere?
696 06051c634a01bc44789a9b503
6051c634a01bc44789a9b503- 150 %true
- 2$$ {33{1\over3}}{ \%}$$false
- 375 %false
- 4$$ {66{2\over3}}{ \%}$$false
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