For the given right triangle, the perimeter is 60cm, so the correct option is D.
How to get the perimeter of the triangle?
We can see a right triangle, by using the Pythagorean theorem we can get the missing cathetus:
[tex]a^2 + (20cm)^2 = (25cm)^2[/tex]
[tex]a = \sqrt{(25cm)^2 - (20cm)^2} = 15cm[/tex]
Now we know the measure of the 3 sides, then the perimeter of the given triangle is:
P = 15cm + 20cm + 25cm = 60cm
The perimeter of the triangle is 60cm.
If you want to learn more about right triangles:
https://brainly.com/question/2217700
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