Find the circumference of a circle with a diameter of 11 mm.

Hey!

We know Circumference = 2πr
Where,
r - radius of the circle.
Since it is given that d = 11mm
r = d/ 2
= 5.5 mm
= 0.55 cm
Therefore, Circumference = 2π × 0.55
= 3.455 cm
= 3. 46 cm
≈ 4 cm

Answercounterclockwise rotation about the origin by 180 degrees followed by reflection about the y-axisexplanationthe given figure has verticesrecall that for counterclockwise rotation about the origin, when we rotate figure pqrs counterclockwise through an angle of 180° about the origin, the coordinates will becomenext, we reflect in the y-axis by negating the x-coordinates of the resulting figure to obtain,therefore the correct answer is c