. A right cicular cylinder has base radius 14 cm and heiht 21 cm. Find (i) Volumeof
cytinder (ii) Curved surface area.
Answers
Step-by-step explanation:
Given :-
A right cicular cylinder has base radius 14 cm and heiht 21 cm.
To find :-
Find the following :
(i) Volume of the cylinder?
(ii) Curved surface area of the Cylinder ?
Solution :-
Given that :
Radius of the base of the right circular cylinder =
r = 14 cm
Height of the right circular cylinder = h = 21 cm
We know that
Volume of a right circular cylinder = πr^2h cubic units
On Substituting these values in the above formula
=> V = (22/7)×(14)^2×(21) cubic.cm
=> V = (22/7)×(14×14×21)
=> V = (1×22×14×14×21)/7
=>V = 22×14×14×3
=> V = 4312×3
=> V = 12936 cubic cm
We know that
Curved Surface Area of a Cone = 2πrh sq.units
=> CSA = 2×(22/7)×14×21 sq.cm
=> CSA = 2×22×14×21/7
=> CSA = 2×22×2×21
=> CSA = 44×42
=> CSA = 1848 sq.cm
Answer:-
I) Volume of the cone = 12936 cubic cm
ii) Curved Surface Area of the cone = 1848 sq.cm
Used formulae:-
- Volume of a right circular Cylinder= πr^2h cubic units
- Curved Surface Area of a Cylinder = 2πrh sq.units
Where,
- h = height of a Cylinder
- r = radius of a Cylinder
- π=22/7