A right curcular cylindrical tunnel of diameter 2 m and length 40 m is to be constructed from a sheet of iron. The area of the iron sheet required in m² is
A. 40π
B. 80π
C. 160π
D. 200π
Answers
Answered by
3
Given : A right circular cylindrical tunnel of diameter 2 m and length 40 m is to be constructed from a sheet of iron.
The diameter of the cylindrical tunnel, d = 2 m
Radius of the cylindrical tunnel ,r = 2/2 = 1 m
Length of the tunnel , h = 40 m
Area of iron sheet required, A = curved surface area of cylinder = 2πrh
A = 2π × 1 × 40
A = 80π m²
Hence the area of the iron sheet required in m² is 80π.
Option (B) 80π is correct.
HOPE THIS ANSWER WILL HELP YOU…..
Similar questions :
The height of sand in a cylindrical-shaped can drops 3 inches when 1 cubic foot of sand is poured out. What is the diameter, in inches, of the cylinder?
A. 24/√π
B. 48/√π
C. 32/√π
D.48/π
https://brainly.in/question/15912079
In a cylinder, if radius is halved and height is doubled, the volume will be
A. same
B. doubled
C. halved
D. four times
https://brainly.in/question/15912078
Answered by
5
Diameter = 2 m
Radius = d/2 = 2/2 = 1 cm
Length = 40 m
Area of sheet = 2πrh
Area = 2 × π × 1 × 40
Area = 80π
Option (B) is right
Similar questions