Fill in the gaps in the following sentences: a) Widening a pair of compasses by 1 cm increases/decreases the radius of the circle that is drawn by cm.

1. A business owner wants to put a security light on the outside of his building. He wants the light to cover the whole width of the sidewalk next to his building. If the sidewalk is 6 feet wide and the light shines down at a 35° angle, how high should he mount the light on the wall? Round to one decimal. Height 35° Sidewalk 6 feet

a. Find the length of a 60 degree arc of a circle whose radius is 4 cm. b. Explain why the arc length in part (a) is longer or shorter in centimeters if the radius had been 8 cm. c. Find the arc length when the radius is increased to 8 cm.   Please please answer all subparts. I will really upvote. Thanks

If 5.00 and 32.40 represent the lengths of a triangle ,using decimal degrees to what decimal place value would you round off any angles?