Question

What is the length of the unknown leg in the right triangle?
8cm 16cm 20cm 40cm

Answer 1

c

Explanation:

the formula is a^2+b^2=c^2 so one leg is 21 so a+ 21^2=29^2. Then you square both and get a+441=841. Then you subtract 441 from both sides and get 400. You square 400 and get 20.

Answer 2

c

Explanation:

the formula is a^2+b^2=c^2 so one leg is 21 so a+ 21^2=29^2. Then you square both and get a+441=841. Then you subtract 441 from both sides and get 400. You square 400 and get 20.