Volume and Surface Area Questions Practice Question and Answer
8 Q: An iron pipe 20 cm long has exterior diameter 25 cm. If the thickness of the pipe is 1 cm, then the whole surface area of the pipe?
643 05f59d091b772fe2f8b223a57
5f59d091b772fe2f8b223a57- 1$$ {3168\ cm^{2}}$$true
- 2$$ {3186\ cm^{2}}$$false
- 3$$ {3200\ cm^{2}}$$false
- 4$$ {3150\ cm^{2}}$$false
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Answer : 1. "$$ {3168\ cm^{2}}$$"
Q: The total surface area of a hemisphere is 166.32 sq cm, find its radius?
633 05f0e762d1090a058653e57e0
5f0e762d1090a058653e57e0- 14.2 cmtrue
- 28.4 cmfalse
- 31.4 cmfalse
- 42.1 cmfalse
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Answer : 1. "4.2 cm"
Q: One side of the rectangular ground is 8m and its diagonal is 17m. Find the area of the ground?
629 05ee9a728bc81cb2528ec0497
5ee9a728bc81cb2528ec0497- 1150 m²false
- 2140 m²false
- 3130 m²false
- 4120 m²true
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Answer : 4. "120 m²"
Q: If the area of a triangle is 616 square cm, then its perimeter will be-
626 05f97fb0cd433054b5c8adf3f
5f97fb0cd433054b5c8adf3f- 188 cmtrue
- 244 cmfalse
- 3132 cmfalse
- 4161 cmfalse
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Answer : 1. "88 cm "
Q: In the given figure, the ratio of the area of the largest square to that of the smallest square is:
625 05ffc2dbf6557c73c86cd43e5
5ffc2dbf6557c73c86cd43e5- 13 : 1false
- 24 : 1false
- 3$$ {\sqrt{2}:1}$$true
- 42 : 1false
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Answer : 3. "$$ {\sqrt{2}:1}$$"
Q: The ratio between the volume (cm3) of a cylinder and the curved surface area (cm2) is numerically 14: 1. If the height of the cylinder is 50 cm, what is the volume of the cylinder (cm3) ?
621 05f9a9e2035c9ba56e4d236d9
5f9a9e2035c9ba56e4d236d9- 161600false
- 292400false
- 3123200true
- 4184800false
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Answer : 3. "123200"
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?
617 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 area of the base of a right circular cone is 400π and its height is 15 cm. The curved surface of the cone ( in cm2) is:
616 05f40ddd354900c5349e9ce36
5f40ddd354900c5349e9ce36- 1560 πfalse
- 2500 πtrue
- 3450 πfalse
- 4480 πfalse
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