To the nearest square meter, what is the curved surface area of the half pipe if it’s 7 m long? The radius is 2.5 m

Mary beth used the mapping rule to find the coordinates of a point that had been rotated 90° counterclockwise around the origin. examine the steps to determine whether she made an error. m (3, –6) is rotated 90° counterclockwise. (x, y) → (–y, x) 1. switch the x- and y-coordinates: (6, –3) 2. multiply the new x-coordinate by –1: (6(–1), –3) 3. simplify: (–6, –3) .

Could someone with number 1 and 2

If a || b and e || f , what if the value of y ?