# 2.2 Cubic Dm of Brass is to Be Drawn into a Cylindrical Wire 0.25 Cm in Diameter. Find the Length of the Wire. - Mathematics

Sum

2.2 cubic dm of brass is to be drawn into a cylindrical wire 0.25 cm in diameter. Find the length of the wire.

#### Solution

Diameter of the cylindrical wire = 0.25 cm
Radius of the cylindrical wire = 0.125 cm
Volume of the brass = 2.2 dm3 = 2200 cm3
Volume of the brass = Volume of the cylindrical wire
$\text{ Length of wire }= \frac{2200 {\text{ cm }}^3}{\frac{22}{7} \times \left( 0. 125\text{ cm }\right)^2} = 44800 cm = 448 m$
Thus, length of the wire is 448 m.

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#### APPEARS IN

RD Sharma Class 8 Maths
Chapter 22 Mensuration - III (Surface Area and Volume of a Right Circular Cylinder)
Exercise 22.2 | Q 28 | Page 26