Question

A rectangular paper of width 14cm is rolled its width and a cylinder of radius 20cm is formed. Find the volume of the cylinder​

Answer 1

Step-by-step explanation:

$volume \: of \: cylinder = \pi {r}^{2} h \\ \: \: \: \: \: = \frac{22}{7} \times 400 \times 14 = \: \: \: \: \: \: \: = 17600$

Answer 2

Answer:

• Area of Rectangular sheet of paper is 1760 cm²

Given:

• A rectangular paper 14cm wide is rolled a long its width to form of cylinder with radius 20cm

To Find:

• Area of rectangle sheet of paper

Solution:

As here we are given Length of the rectangular paper 14 cm. Radius of the cylinder is 20cm. So, we can find the Area of the rectangular sheet of paper.

$\sf \mapsto Breadth \: of \: rectangle = area \: of \: circle$

$\sf \mapsto Breadth = 2πr$

$\sf \mapsto Breadth = 2 × \dfrac{22}{7} × 20$

$\sf \mapsto Breadth = \dfrac{44 \times 20}{7}$

$\sf \mapsto Breadth = \dfrac{880}{7}</p><p>$

Area of Rectangle = L × B

Where,

• Length= 14 cm

• Breadth = 88/7 cm

$\sf \mapsto Area \: of \: Rectangle= 14 × \dfrac{880}{7}$

$\sf \mapsto Area \: of \: Rectangle = 2 × 880$

$\sf \mapsto Area \: of \: rectangle = 1760 cm²$

Hence,

• Area of Rectangular sheet of paper is 1760 cm²

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