(d) A solid cone has radius 3R cm and slant height 9R cm. ASSIGNMENT - 2024 A solid cylinder has radius x cm and height 7x cm. The total surface area of the cone is equal to the total surface area of the cylinder. Given that R=kx, find the value of k. [The curved surface area, A, of a cone with radius r and slant height / is A = πrl.]
