Calculate the perimeter...

The two bigger sides measure 6 units according to the image and the smallest on 3 units.
The perimeter of a triangle is the sum of the sides:
6 + 6 + 3 = 15
The answer is the third option, closest one to 15 units.
Hope it helped,
Happy homework/ study/ exam!
Answer
14.8 units
Explanations
First find the lengths of the triangle.
YX = √(2²+5²) = √(4+25) =√29
YZ = √(2²+3²) = √(4+9) = √13
XZ = √(5²+3²) =√(25+9) = √34
Perimeter = √29 + √13 + √34
= 14.82 units