A Joker's cap is in the form of a right circular cone of base radius 7 cm and height 27 cm. Find the area of the sheet required to make 10 such caps.
Given Radius =7 cm and height =27 cmThen slant height l=√(27)2+(7)2=√729+49=√778=27.84 cm
Then curved surface area conical cap = π×r×l=227×7×27.84=612.48m2
Then sheet required for make 10 caps = 612.48×10=6124.8 m2