The triangles below are similar find the value of a. it is 10 on the left side 10 on the right and 6 at the bottom and on ther other triangle its 5 on each sides and a at the bottom

a.10
b. 3
c. 2.5
d. 6

the triangles are similar. find the value of a. it is 16 on the left side and 20 on the right on the other triangle a on the left side s on the right

a. = 12
b. a = 6
c. a = 10
d. a = 16