A conical tent with radius 6 units and height 8 units is to be made by canvas. How much canvas is needed to make the tent? (Rounded off to two places of decimals)
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. 188.4 units.
Given that:
A conical tent with a radius of 6 units and height of 8 units is to be made with canvas
The curved surface area of the canvas is πrl (I = slant height and r = radius)
Again l2 = r2 + h2
⇒ l = = = = 10 units
The canvas needed to make the tent is,
⇒ π × 6 × 10 = 3.14 × 6 × 10 = 188.4 units