Andrew is using three pieces of scrap wood
to build a wall shelf in his bathroom. The shelf
will be shaped like a triangle, and the pieces of
scrap wood measure 12 inches, 15 inches and 9
inches long. Will the shelf be shaped like a right
triangle? Why or why not?

answer:   rotate 270° clockwise about (7, 1) and reflect across the line x = 7

step-by-step explanation:

because i took test

the answer is b

arc length = 6.63311 ft.

step-by-step explanation:

the formula the arc measure is:

arc length s=2πr(c)/360

where:

c   is the central angle of the arc in degrees

r   is the radius of the arc

π   is pi, approximately 3.142

using the above formula we get

s =

thus we find that arc length of an arc for a circle of radius 20 feet and central angle 19 degrees is

6.63311 feet