Answer:
c. 13.20
Step-by-step explanation:
Answer: H
7% of 21 is 1.47
w= width
l = 3w
P = 2(l+w)
substitute
24 = 2(3w+w)
24 = 2(4w)
24 =8w
3 =w
The width is 3 inches
the length is 9 inches
Ten thousand times as loud.
