What is the radius of a circle with a diameter 200 cm?????????????????????????????

r = 100 cm

Step-by-step explanation:

The radius is 1/2 of the diameter

1/2 d = 1/2(200) = 100

A rigid transformation is a type of transformation of the plane that preserves the size and shape of the image. When reflections, translations, rotations are combined, this results to rigid transformations. The pre-image and the post-image are congruent except in the orientation. Answer thus is A.