The first documentary was created by it documented
a.
(1) the lumiere brothers; (2) the inuit people living in the pacific northwest.
b.
(1) robert flaherty; (2) the lives of the samoan peoples.
c.
(1) orson welles; (2) mining in california during the gold rush.
d.
(1) d. w. griffith; (2) the civil war years.

perimeter = 2l +2w, divide total perimeter by 2 for total length of 1 side and 1 width

172/2 = 86 (  total for 1 side and 1 width)

86-24 = 62 (since length is 24 ft longer subtract 24 then divide by 2 for width)

62/2 = 31

width = 31 feet

length = 31 +24 = 55 feet

check: 31*2 = 62, 55*2 = 110,  110+62 = 172

pitch- the definition of pitch is as follows:

"the quality of a sound governed by the rate of vibrations producing it; the degree of highness or lowness of a tone."