Perimeter 45121

The diamond has an area of 36.9 cm² and a side length of 9 cm.
a) How many cm does the height of the diamond measure?
b) Calculate the perimeter of the diamond.

Correct answer:

v =  4.1 cm
o =  36 cm

Step-by-step explanation:

$$\begin{gathered} S=36.9{\text{cm}}^2 \\ a=9\text{cm} \\ S=a\cdot v \\ v=S/a=36.9/9=4.1\text{cm} \end{gathered}$$

$o=4\cdot a=4\cdot 9=36\text{cm}$

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