Answer:
141.4 cm
Step-by-step explanation:
Refer to the notations in the attached photo,
AG = d
Using Pythagoras Theorem:
In triangle ABC,
AC
=
= 100 cm
∴ AC is 100 cm.
In triangle ACG,
d
= 141.4 cm (cor. to the nearest tenth)
The answer is C 16:20 because both numbers 4&5 are multiplied by four