What is the perimeter square above A.882 square centimeters

B.42 square centimeters

C.441 square centimeters

D. 84 square centimeters

option D

Step-by-step explanation:

length of a square = 21 cm

perimeter of a square = 4l

=4*21

=84 centimeters

C

Step-by-step explanation:

The square looks like it has equivalent sides so

21 x 21 = 441 square centimeters

x= 149. 24+7=31. 180-31=149

your welcome

problem:

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

f(5/2) = 10/3

i hope this !