So... hmmm if you check the first picture below, for 2)
we could use the proportions of those small, medium and large similar triangles like

now.. for 3) will be the second picture below
Answer:
Step-by-step explanation:
4x = 38
x= 38/ 4
x = 9 1/2
66.7 %
convert to decimal the multiply by 100
Answer:
Step-by-step explanation: