Aptitude - Volume and Surface Area
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- Volume and Surface Area - Formulas
- Volume and Surface Area - General Questions
- Volume and Surface Area - Data Sufficiency 1
- Volume and Surface Area - Data Sufficiency 2
Clearly, we have r = 3 cm and h = 4 cm.
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1 | ![]() |
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1 | x ![]() |
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= 12![]() |
3 | 3 |
Video Explanation: https://youtu.be/Njsid2mVwUY
1 hectare = 10,000 m2
So, Area = (1.5 x 10000) m2 = 15000 m2.
Depth = | 5 | m | = | 1 | m. |
100 | 20 |
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15000 x | 1 | ![]() |
= 750 m3. |
20 |
Video Explanation: https://youtu.be/dDbVuBzYop8
2(15 + 12) x h = 2(15 x 12)
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180 | m = | 20 | m. |
27 | 3 |
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15 x 12 x | 20 | ![]() |
= 1200 m3. |
3 |
Video Explanation: https://youtu.be/V8EQ1YIaH74
Let the length of the wire be h.
Radius = | 1 | mm | = | 1 | cm. | Then, |
2 | 20 |
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22 | x | 1 | x | 1 | x h = 66. |
7 | 20 | 20 |
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66 x 20 x 20 x 7 | ![]() |
= 8400 cm = 84 m. |
22 |
External radius = 4 cm,
Internal radius = 3 cm.
Volume of iron |
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= 462 cm3. |
Weight of iron = (462 x 8) gm = 3696 gm = 3.696 kg.