#### Ribeiro Alvo

##### New member

- Joined
- Sep 5, 2019

- Messages
- 2

a + b = c + d

Were 'a' and 'b' are the catheters of a rectangular triangle and 'c' the hypotenuse, 'd' is the diameter of the circumference inscribed therein.

If

a = 3

b = 4

c = 5

d = 2

Question:

Why is the radius 'r' of this circumference equal to 1 ?