 Hi and welcome to our session. Let us discuss the following question. The question says a Joker's cap is in the form of a right circular cone of base radius 7 centimeters and high grain 4 centimeters. Find the area of the sheet required to make 10 such caps. Let's now begin with the solution. In the question we are given that the radius of the cone, that is r is equal to 7 centimeters, height that is h is equal to 24 centimeters. Clearly area of the sheet is equal to the surface area of cone. The surface area of cone is pi rl. Now let's first find l. We know that l is equal to square root of h squared plus r squared. Substitute the value of h and r. h is equal to 24 centimeters and r is equal to 7 centimeters. And this is equal to 625 and the square root centimeters and this is equal to 25 centimeters. Substitute the value of pi rl. Pi is equal to 22 by 7. r is equal to 7. l is equal to 45 centimeters squared. And this is equal to 550 centimeters squared. So area of one sheet is 550 centimeters squared. Therefore, area of sheet required to make 10 such caps is equal to 550 into 10 centimeters squared. And this is equal to 5500 centimeters squared. Hence our required answer is 5500 centimeters squared. So this completes the session. Bye and take care.