Square ratio comparison

Two squares are given. The first has a side length of 5 cm, the second 10 cm. Write the ratio of:
for a- of their sides
for b- their perimeters
for c- their areas

Final Answer:

a =  1:2
b =  1:2
c =  1:4

Step-by-step explanation:

$$\begin{gathered} x=5\text{cm} \\ y=10\text{cm} \\ a=x:y=5:10=1:2=0.5 \end{gathered}$$

$$\begin{gathered} o_1=4\cdot x=4\cdot 5=20\text{cm} \\ {o}_2=4\cdot y=4\cdot 10=40\text{cm} \\ b=o_1:o_2=20:40=1:2=0.5 \end{gathered}$$

$$\begin{gathered} S_1=x^2=5^2=25{\text{cm}}^2 \\ {S}_2=y^2=10^2=100{\text{cm}}^2 \\ c=S_1:S_2=25:100=1:4=0.25 \end{gathered}$$

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