let
b--------------> the base of triangle
h--------------> the height of triangle
Area A1=b*h/2--------------- > 30 cm²
if the base and height are scaled by a factor of 4
we have that
b=4b
h=4h
A2=(4b)*(4h)/2--------> 16(b*h/2)=16A1
A2=16A1---------> 16*30=480 cm²
the area of resulting triangle is 480 cm² (16 times the original area)
