Answer:
That smile tho lol
anywayssssss
b= 16 mm
Step-by-step explanation:
Pythagorean theorem is a^2 + b^2= c^2, so-
12^2 +b^2= 20^2
144+b^2=400
b^2=400-144
b^2= 256
b= 16
16 mm
A²+B²=C²
12²+x²=20²
144+x²=400
x²=400-144
x²=256
√x = √256
x = 16
