Question

how many Iron rods each of length 14m and diameter 4 cm can be made out of 0.88 M cube of iron

Answer 1

hey
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volume of iron = 0.88m^3

(h) of rod = 14 m
(r) of rod = 4/2 = 2 cm = 2/100 m

volume of 1 rod = πr^2h
= 22/7×2/100×2/100×14

req no of rods = volume of iron / volume of 1 rod

=volume of iron / volume of 1 rod

hence ans is 50

for the calculation refer to the attachment

hope helped
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Answer 2

Solutions :-

Given :
Length of iron rod = h = 14 m
Radius of iron rod = r = 4/2 = 2 cm = 0.02 m

Find the volume of an iron rod :-

Volume = πr²h cu. unit
= 22/7 × 0.02 × 0.02 × 14
= 0.0176


Find how many Iron rods can be made from 0.88 m² of iron :-

= 0.88/0.0176
= 50


Hence,
50 iron rods can be made from 0.88 m² of iron.

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✯ @shivamsinghamrajput ✯