Find the area of the spiral tube shown in the figure. The tube has the same width throughout. Class 8
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Expert Answer
Find the area of the spiral tube shown in the figure. The tube has the same width throughout. Class 8
Question 1.
Find the area of the spiral tube shown in the figure. The tube has the same width throughout. Class 8
[Hint : There are different ways of finding the area. Here is one method.]
What should be the length of the straight tube if it is to have the same area as the bent tube on the left? It is 5 + 5 = 10.
Solution:
Length of the straight tube
= Sum of the lengths of the bent tube]
= (5 + 5 + 10 + 10 + 15 + 15 + 20 + 20 + 20)m
= 120 m
Width of the tube = 1 m
So, area of the spiral tube
= 120 × 1 = 12 sq.m