Answer:
The correct option is B.
Step-by-step explanation:
It is given that the figure RST is reflected about the y-axis to obtain figure R’S’T’.
Reflection is a rigid transformation. It means after reflection the shape and size of the figure is remains the same and both image and preimage are congruent.
Therefore option A is incorrect.
The corresponding angles and sides of congruent triangles are same.
Therefore options C and D are incorrect.
Congruent triangles are also the similar triangle with scale factor 1.
Therefore the figure RST is similar to figure R’S’T’ and option B is correct.
The arc length of AB is 8 m (app.)
Explanation:
Given that the radius of the circle is 8 m.
The central angle is 60°
We need to determine the arc length of AB
The arc length of AB can be determined using the formula,
Substituting central angle = 60° and circumference = 2πr in the above formula, we get,
Simplifying the terms, we get,
Dividing, we get,
Hence, the arc length is approximately equal to 8.
Therefore, the arc length of AB is 8 m