Question

Geometry help >.<

Answer 1

Use the pythagorean theorem
a^2+b^2=c^2

a^2 + 13^2=16^2

Answer 2

Alright. Thank you

Answer 3

a^2+169=676
a^2=676-169
a^2=507
a=plus or minus the square root of 507 (approx 22.5)

Answer 4

I understand not. Much appreciation bro