InterviewSolution
Saved Bookmarks
| 1. |
A heap of rice is in the form of a cone of diameter 12 m and height 8 m . Find it's volume ? How much canvas cloth is required to cover the heap ?[ use π = 3.14 ] |
|
Answer» Answer: A heap of rice is in the form of CONE Diameter of cone = 12 m 2r = 12 r = 12 / 2 r = 6 m It's height = 8 m Volume of cone = 1/3 πr² h → 1/3 × 3.14 × 6 × 6 × 8 → 3.14 × 12 × 8 → 301.44 m³ We know that l² = h² + r² → 8² + 6² → 64 + 36 l² = 100 l = √100 l = 10 Later SURFACE AREA of cone = πrl → 3.14 × 6 × 10 → 3.14 × 60 → 188.4 m² |
|