Answer:
Below
Step-by-step explanation:
First we can find the length of the two sides that are NOT the hypotenuse :
Counting side AC we can see that AC = 8cm
Counting side BA we can see that BA = 4cm
Now to find the angular side aka the hypotenuse we have to use Pythagorean theorem :
a^2 + b^2 = c^2
Plugging in our values :
(8)^2 + (4)^2 = c^2
64 + 16 = c^2
80 = c^2
Now we have to square this number to get the value of c
√ 80 = c
8.9 = c
Adding all the values up to get the perimeter :
8.9 + 8 + 4 = 20.9 cm
Hope this helps! Best of luck <3
