The base of a conical tent is 12m in diameter and the height of its vertex is 3.2 m. The area of the canvas required to put up such a

The base of a conical tent is 12m in diameter and the height of i ts vertex is 3.2 m. The area of the canvas required to put up such a tent (in m²) is nearly? (take  = 22/7 )

(a) 122.11

(b) 128.22

(c) 132.33

(d) 142.44

Sol:

Triplet (8, 15, 17)

(32, 60, 68)

(3.2, 6, 6.8)

Curved surface area =22/7 × 6 × 6.8

= 128.22 cm²