Answer:
A)4
Explanation:
Assuming all edges are integral values
The most basic right angles triangle with integral edges is
(3,4,5)
as it obeys pythogores theorem
which is
![a^(2)+ b^(2) =c^(2) \\\text{where c is the hypotenuse}\\\text{and a and b are the other side}](https://img.qammunity.org/2020/formulas/mathematics/high-school/my5cefav74m0v236hspv84bcawy0iq5n9a.png)
![3^(2) +4^(2) =5^(2)](https://img.qammunity.org/2020/formulas/mathematics/high-school/ju429qyxpcfjwrbdacsxu153zcxmt2xxfl.png)
Now, double each edge,it will still remain a right angled triangle since it will still obey pythogores theorem
so the edges are (4,6,10)
⇒4 cm is the short leg of a integral right triangle with hypotenuse 10 cm