 Hello and how are you all today? The question says the inner diameter of a cylindrical wooden pipe is 24 centimeter and Its outer diameter is 28 centimeter The length of the pipe is 35 centimeters Find the mass of the pipe is if 1 centimeter cube of wood has a mass of 0.6 grams So let us first understand this question well Here let this be a wooden pipe Now here we are given the inner diameter as 24 centimeter Therefore the inner radius That will be denoted by a small letter r will be half of it. That means 12 centimeter Similarly, the outer diameter is given to us as 28 centimeter So that means the inner radius Sorry, the outer radius that will be denoted by a capital R will be equal to half of it That means 14 centimeter The height or the length of the pipe is Given to us as 35 centimeter Now we need to find out the mass of this pipe. So if you notice First of all, we will be finding out the volume of the pipe In centimeter cube it will be volume of outer cylinder minus volume of In a Cylinder so it is equal to volume of the outer cylinder will be pi capital R square H minus volume of the inner cylinder will be pi small R square H on taking Pi H common we are left in the bracket with bigger R square minus smaller R Square now let us substitute their values We have It as 22 by 7 into H, which is given to us as 35 in the bracket 14 the whole square minus 12 the whole square that is further equal to 22 by 7 into 35 into 196 minus 144 further We have 110 into 196 minus 144 will be equal to 52 So we have 5720 centimeter cube now this can be converted into This needs to be converted into Grams so the mass of The pipe is equal to 5720 into 0.6 Grams the answer will come out to be 3432 grams or It can be written as 3.4 3 2 Right so this is the required answer to the session. Hope you understood the concept well and have a very nice day ahead