7.A joker's cap is in the form of a right circular cone of base radius

1.	7.A joker's cap is in the form of a right circular cone of base radius 7 cm and height24 cm. Find the area of the sheet required to make 10 such caps.
Answer» Radius = 7cmheight = 24 cm l =√r² +h²l =√7² + 24²l =√49 + 576l = √625l = 25 Curved surface area of one conical cap =πrl= (22/7)×(7)×25= 550 cm² Curved surface area of 10 conical caps = 10 × 550 cm ²= 5500 cm²∴ the area of sheet required to make 10 conical caps is 5500 cm²

7.A joker's cap is in the form of a right circular cone of base radius 7 cm and height24 cm. Find the area of the sheet required to make 10 such caps.

Answer»

Radius = 7cmheight = 24 cm

l =√r² +h²l =√7² + 24²l =√49 + 576l = √625l = 25

Curved surface area of one conical cap =πrl= (22/7)×(7)×25= 550 cm²

Curved surface area of 10 conical caps = 10 × 550 cm ²= 5500 cm²∴ the area of sheet required to make 10 conical caps is 5500 cm²