0 mehakNewbie Asked: July 26, 20232023-07-26T09:24:34+05:30 2023-07-26T09:24:34+05:30In: CBSE 4. 2.2 cubic dm of brass is to be drawn into a cylindrical wire of 0.25 cm in diameter. Find the length of the wire. 0 Explain the question using various formulas. Class 10th Cbse, RD Sharma. Surface area and volumes cbse mathematicsrd sharma class 10th Share Facebook 1 Answer Voted Oldest Recent [Deleted User] 2023-07-27T11:08:04+05:30Added an answer on July 27, 2023 at 11:08 am Solution: Given, 2.2 dm3 of brass is to be drawn into a cylindrical wire of Diameter = 0.25 cm So, the radius of the wire (r) = d/2 = 0.25/2 = 0.125*10-2 cm Now, 1 cm = 0.01 m So, 0.1cm = 0.001 m Let the length of the wire be (h) We know that, The volume of the cylinder = πr2h It’s understood that, The volume of cylindrical wire = The volume of brass of 2.2 dm3 h = 448 m Therefore, the length of the cylindrical wire drawn is 448 m. 0 Reply Share Share Share on Facebook Share on Twitter Share on LinkedIn Share on WhatsApp Leave an answerLeave an answerCancel reply Featured image Select file Browse Add a Video to describe the problem better. Video type Youtube Vimeo Dailymotion Facebook Choose from here the video type. Video ID Put Video ID here: https://www.youtube.com/watch?v=sdUUx5FdySs Ex: "sdUUx5FdySs". Click on image to update the captcha. Visual Text Save my name, email, and website in this browser for the next time I comment. Related Questions 16. A copper sphere of radius 3 cm is melted and recast into a right circular cone of ... 17. A copper rod of diameter 1 cm and length 8 cm is drawn into a wire of ... 18. The diameters of the internal and external surfaces of a hollow spherical shell are 10cm and 6 ... 19. How many coins 1.75 cm in diameter and 2 mm thick must be melted to form a ... 20. The surface area of a solid metallic sphere is 616 cm2. It is melted and recast into ...
Solution:
Given,
2.2 dm3 of brass is to be drawn into a cylindrical wire of Diameter = 0.25 cm
So, the radius of the wire (r) = d/2
= 0.25/2 = 0.125*10-2 cm
Now, 1 cm = 0.01 m
So, 0.1cm = 0.001 m
Let the length of the wire be (h)
We know that,
The volume of the cylinder = πr2h
It’s understood that,
The volume of cylindrical wire = The volume of brass of 2.2 dm3
h = 448 m
Therefore, the length of the cylindrical wire drawn is 448 m.