Respuesta :
Answer:
4cm
Step-by-step explanation:
28 + 28 = 56
64 - 56 = 8
8/2=4
just to check : 4 + 4 + 28 + 28 = 64
hope this helps x
brainliest plx?
Answer:
Perimeter of a rectangle = 2(l+b)
2(28+b)=64cm
By using distributive law,
56+2b=64
2b=64-56=8
b=8 divided by 2,4
B=4
Shorter side is 4cm long