Question

a military tent of height 8.25 m is in the form of right circular cylinder of base 30 m and height 5.5 m surmonted by a right circular cone of same base radius. find the lenghth of canvas used in making the tent, if the breadth of the canva in 1.5

Answer 1

for this
first step - find out the curved surface area of cone using formula πrl
then find the lateral surface area of cylindrical tent using formula 2πrh
and add πrl+2πrh
then u will get total surface area of the canvas
the u will write like this
total surface area of canvas =length× breadth
as breadth is given
and we can find total surface of canvas by above process , so length will be easily calculated