The circumference of the base of a conical tent is 66 m. If the height of the tent is 36 m, what is the area (in m2) of the canvas used in making the tent? (Take π = 22/7)
Show answer & explanation
Correct answer: C
Explanation
The correct answer is Option 3 i.e 1237.5.
| Understanding/Application |
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The circumference of the base of a conical tent = 66 m 2πr = 66 r = 33/(22/7) = 21/2 m h = 36 m |
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l = √r2 + h2 l = √(21/2)2 + 362 l = √(441/4) + 1296 = 75/2 = 37.5 m Area = πrl = (22/7) × (21/2) × 37.5 = 1237.5 m2 |