Question

Me ajudem por favor! preciso mandar isso amanhã cedo

Answer 1

2-
a^2=15^2+8^2
a^2=225+64
a^2=289
a=√289
a=17

3-
a^2=12^2+16^2
a^2=144+256
a^2=400
a=20

1-a
9^2=x^2+6^2
81=x^2+36
x^2=81-36
x^2=45
x=6,71

B)3^2=√7^2+x^2
9=7+x^2
x^2=9-7
x^2=2
x=√2

C)13^2=5^2+x^2
169=25+x^2
x^2=169-25
x^2=144
x=12