Question

The triangles are similar. Find the value of a.

Answer 1

8 is half of 16, so half of 20 is 10
a = 10

Answer 2

A = 20.

Answer 3

Typo 10.

Answer 4

@kobeni-chan Beat me to it.

Answer 5

That's what I thought! Yay!

Answer 6

lol

Answer 7

Round of applause for both of ya!

Answer 8

Half of 16 on the bigger triangle is 8, which is the length of the smaller triangle.

20 is the hypotenuse of the bigger triangle, so the hypotenuse of the smaller one must be 10.