Question

A line segment $\overline {AB} = 4.6cm$ another line segment $\overline {CD} = 3.8cm$ .Then measure of the line segment whose length is equal to the difference of $\overline {AB} $ and $\overline {CD} $
A) 1.8 cm
B) 2.8 cm
C) 0.8 cm
D) 8.4 cm

Answer 1

Hint: Given AB is a line segment with length 4.6 cm and CD is a line segment with length 3.8 cm. As the length must be positive, subtract the length of CD from AB as the length of AB is larger than CD. The result after subtracting the lengths is the required length of the line segment.

Complete step-by-step answer:
We are given a line segment AB has a length 4.6 cm and another line segment CD has a length 3.8 cm.
We have to find the measure of the line segment whose length is equal to the difference of AB and CD.
Length is a measurement of distance which must always be positive.
Here the length of AB is greater than the length of CD which is 4.6>3.8.
So subtract the length of CD from AB.
$\therefore 4.6 - 3.8 = 0.8cm$
The length of the line segment obtained from subtracting the lengths of AB and CD is 0.8 cm.

Note: : A line segment is a part of a line which has two distinct end points whereas a line does not have any end points and extends in both the directions. So do not confuse a line segment with a line.