Question

The radius of a conical tent is 5m and its height is 12m. Calculate the length of the canvas used in making the tent if width of canvas is 2cm.

Answer 1

Radius of the conical sent (r) = 5 m. 

Height of the tent (h) = 12 m. 

∴ Slant height of the cone

Now, surface area of the tent = πrl 

= \(\frac{22}{7}\) × 5 × 13 = \(\frac{1430}{7}\) m² 

Area of the canvas used = \(\frac{1430}{7}\) m² 

It is given that the width of the canvas = 2m. 

Length of the canvas used = \(\frac{Area}{Width}\)

= \(\frac{1430}{7}\times\frac{1}{2}\)

= 102.14 m