Diamond - simple

Calculate the circumference and area of the diamond if the side is 5 cm long and the height is 3 cm long.

Correct answer:

o =  20 cm
S =  15 cm²

Step-by-step explanation:

$$\begin{gathered} a=5\text{ cm } \\ v=3\text{ cm } \\ o=4\cdot a=4\cdot 5=20\text{ cm} \end{gathered}$$

$S=a\cdot v=5\cdot 3=15{\text{cm}}^2$

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