Two edges of a rectangular sheet of paper having dimensions 14 m - 7 m are held together so that it forms a cylinder- Find the curved surface areain sq- cm of the cylinder-A- 98

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Standard IX

Mathematics

Surface Area of a Cylinder

Two edges of ...

Question

Two edges of a rectangular sheet of paper having dimensions 14m $\times$ 7m are held together so that it forms a cylinder. Find the curved surface area(in sq. cm) of the cylinder.
98

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Solution

The correct option is A 98
Since the paper is formed into the cylinder, the area of paper is equal to the curved surface area of the cylinder.
Curved surface Area
= 2 $π$ r x h
= length of paper x breadth of paper
$= 14 m \times 7 m = 98 m^{2}$

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Two edges of a rectangular sheet of paper having dimensions 14m × 7m are held together so that it forms a cylinder. Find the curved surface area(in sq. cm) of the cylinder.98

The correct option is A 98Since the paper is formed into the cylinder, the area of paper is equal to the curved surface area of the cylinder. Curved surface Area = 2πr x h = length of paper x breadth of paper =14m×7m=98 m2

Two edges of a rectangular sheet of paper having dimensions 14m $\times$ 7m are held together so that it forms a cylinder. Find the curved surface area(in sq. cm) of the cylinder.
98

The correct option is A 98
Since the paper is formed into the cylinder, the area of paper is equal to the curved surface area of the cylinder.
Curved surface Area
= 2 $π$ r x h
= length of paper x breadth of paper
$= 14 m \times 7 m = 98 m^{2}$