Question

A line segment of length 7.8 cm is bisected then the length of each part is …………….. cm. 

A) 7.4 

B) 3.8 

C) 7.8 

D) 3.9

Answer 1

Correct option is (D) 3.9

Let line segment AB of length 7.8 cm is bisected at point C.

\(\therefore\) AB = AC+BC and AC = BC

\((\because\) Line segment AB is bisected at point C)

\(\Rightarrow\) 2AC = AB = 7.8 cm \((\because\) AB = 7.8 cm)

\(\Rightarrow\) AC = \(\frac{7.8}2\,cm\) = 3.9 cm

Thus, AC = BC = 3.9 cm

Answer 2

Correct option is  D) 3.9