Calculate the perimeter of this sector.

The two straight edges of the shape correspond to the original circle's radius, 5.5 cm. We're told this sector has area 30.25 cm^2, which we will use to determine the measure of the central angle subtended by the arc (the remaining edge of the shape).

The complete circle has an area of , which corresponds to a "central angle" of . Then if is the central angle of this sector, we have

The complete circle has a circumference of . Then if is the length of the sector's arc, we get

So the sector has a total perimeter of

5.5 cm + 5.5 cm + 11 cm = 22 cm

a

step-by-step explanation:

answer: input the dimensions of the room to be painted. click the button to calculate the amount of paint and man-hours needed for this job.

interior paint coverage depends on the brand of paint used. the coverage amount is listed on the label of the paint can. use this to adjust the values in the paint coverage section below. paint usually is applied at 350 to 400 square feet per gallon (primer at 200 to 300 square feet per gallon).

step-by-step explanation: