Question

A right circular cylinder opens at both ends of diameter 2m and length 40m is to be constructed from a sheet of iron.Find the area of the iron sheet required in m2.

Answer 1

Answer:

Step-by-step explanation:

Curve surface area of cylinder = 2πrh

=2×1×40×π

=80×3.14

=251.2m²

Answer 2

The area of the iron sheet required is 251.2 sq.m.

Step-by-step explanation:

Diameter of cylinder = 2 m

Radius of cylinder = $\frac{2}{2}=1 m$

Length of cylinder = 40 m

Curved surface area of cylinder = $2 \pi r h = 2 \times 3.14 \times 1 \times 40=251.2 m^2$

Hence the area of the iron sheet required is 251.2 sq.m.

#Learn more:

Curved surface area of a right circular cylinder is 6.6 m2.if the radius of the base of the cylinder is 1.4 m . find the height

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