The amount of concrete required to build a concrete cylindrical pillar whose base has a perimeter of 8.8 meter and curved surface area of 17.6 sq. meter, is (Take 
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Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e. 12.32 m3
| Application |
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2πr=8.8m2πr=8.8m 2×22/7 × r = 8.8m r = 1.4m 2πr × h=17.6m2 8.8 × h=17.6 h=2m Now, vol=πr2h =227 × 1.4 × 1.4 × 2 = 12.32m3 |