Answer:
68 inches
Step-by-step explanation:
P = 2 (L + W)
P = 2(4x+5 + 4x+5)
P = 2(8x + 10)
P = 16x + 20
If x= 3
P = 16(3) + 20
P = 48 + 20
P = 68 inches
7.62
use the Pythagorean theorem
3^2+7^2=58
the square root of 58 is about 7.62
39=22
28-6 equal to 22 so 39= 22