A right circular cylinder has base radius 14cm and height 21cm.Find: (i) Area of base or area of each end (ii) Curved surface area(iii) Total surface area and (iv) Volume of the right circular cylinder.
Answers
¡) area of base :2 pie r h
=2*22/7*14*21
=2*22*2*21
=88*21
=1848cm^
Given,
- radius of right circular cylinder = 14cm
- Height of the right circular cylinder = 21cm
To find,
- Area of base or area of each end
- Curved surface area
- Total surface area
- The volume of the right circular cylinder
Solution,
The area of base or area of each end is 616 cm², the Curved surface area is 1848 cm², the Total surface area is 3080 cm², and the Volume of the right circular cylinder is 12936 cm³.
We can simply find the Area of base or area of each end, Curved surface area, Total surface area, and Volume of the right circular cylinder.
Area of base = πr²
= 22/7 * 14 *14
= 616 cm²
∴ The area of base or area of each end of a right circular cylinder is 616 cm².
The curved surface of right circular cylinder = 2πrh
= 2 * 22/7 * 14 * 21
= 1848 cm²
∴ The curved surface area of a right circular cylinder is 1848 cm².
The total surface area of the right circular cylinder = 2πr(r+h)
= 2* 22/7 * 14 (14+21)
= 3080 cm²
∴ The total surface area of the right circular cylinder is 3080 cm².
Volume of the right circular cylinder = πr²h
= 22/7 * 14 * 14 *21
= 12936 cm³
∴The volume of the right circular cylinder is 12936 cm³.
Hence, the area of base or area of each end is 616 cm², Curved surface area is 1848 cm², Total surface area is 3080 cm², and Volume of the right circular cylinder is 12936 cm³.