what is the circumference of a circle with a diameter of 6 feet? Use 3.14 for π

Polygons efgh and e′f′g′h′ are shown on the coordinate grid: what set of transformations is performed on efgh to form e′f′g′h′? a. a translation 1 unit to the left followed by a 90-degree counterclockwise rotation about the origin b. a translation 1 unit to the right followed by a 90-degree counterclockwise rotation about the origin c. a 90-degree clockwise rotation about the origin followed by a translation 2 units to the right d. a 90-degree clockwise rotation about the origin followed by a translation 2 units to the left

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

Hurry which expression is equivalent to 3√x^5y?