 Hello friends and how are you all doing today? The question says a tent of height 8.25m is in the form of a right circular cylinder with diameter base 30m and height 5.5m. Surrounded by a right circular cone of the same base, find the cost of the canvas of the tent at the weight of 45 Rs per m2. Since here we need to find out the cost of the canvas that means for this tent we need to find out the total curved surface area. Now here the total height of the tent was given to us as 8.25m and that of the cylindrical base is given to us as 5.5m so that means the height of the cone is 2.75m that is 8.25-5.5 and the base diameter is given to us as 30 so the radius will be 15. So let me write down all these given values. Here we are given the height of the tent as 8.25m height of the cylinder is given to us as it is named it as H1 it is given to us as 5.5m so therefore height of the cone that is H2 will be 8.25-5.5 that gives us the answer as 2.75m right. Also the diameter of the base is given to us as 30m that means radius of the base will be half of it that means 15m. Now we are finding out the curved surface area of the tent that is equal to curved surface area of the cone plus the curved surface area of the cylinder further. Surface area of the cone is pi RL where L is the slant height plus curved surface area of the cylinder is 2 pi RH. So we need to find out the slant height of the cone first that will be slant height of the cone equal to under the root base square that means 15 square plus the perpendicular square that means 2.75m the whole square 15 into 15 gives us 225 plus 2.75 into 2.75 gives us 7.5625 that is further equal to under the root and its square root is equal to 15.25 right. Now let us substitute these values and we have let's take pi R common we are left with L plus 2H that is 22 by 7 into R that is 15 into L that is found out to be 15.25 plus 2 into H and here H is H1 that is of the cylinder 5.5. So the answer to this calculation is coming out to be this is 5.5 into 2 remember it's getting multiplied by 2. So we have the answer as 1 2 3 7.5 meter square. Now the cost of canvas is equal to is 45 into 1237.5 that is further equal to rupees 55687.50 and this is the answer to the solution the question. This ends my session hope you understood the whole concept well have a very nice day.