Given: Area of cloth = 165m2
Radius of conical tent = 5m
Area covered by 1 student = 5/7 m2
Curved surface area of cone = πrl
Where, π = 22/7
r = radius of a cone
l = ***** height of a cone
Thus, Curved surface area of conical tent = πrl
(i) Now, By using formula we can find height of a cone i.e.
r2 + h2 = l2 where r=radius of a cone
h=height of a cone
l=***** height of a cone
⇒ (5)2 + h2 = (10.5)2
⇒ 25+ h2 = 110.25
⇒ h2 = 110.25 – 25 = 85.25
⇒ h = √85.25 = 9.23 m
r = radius of base of a cone
h = height of a cone