A LOT OF POINTS!! find the value of x for each figure. each figure is in centimeters(cm)

please answer this i have been giving away points but nobody answers :(

10

x*(6/10)=6/70

x=6/70*10/6

x=1/7

11

x*2/8=6/32

x=6/32*8/2

x=3/4

12

x*1/5=1/15

x=1/15*5=1/3

13

x*1/7=1/14

x=1/14*7=1/2

14

x*1/2=1/4

x=1/4*2=1/2

15

x*2/5=14/45

x=14/45*5/2

x=7/9

b) 1/3 * 1/5

step-by-step explanation:

each smallest part is 1/15 since the written one is 1/5 and it's divided by 3 equal parts. (1/5 )/3 = 1/15 = 1/3 * 1/5