Question

Determine as medidas indicadas?

Answer 1

a) x²=20²+y²

   y²=9²+12²

y²=81+144

y²=225

y=√225

y=15

x²=20²+y²

x²=400+225

x²=625

x=√625

x=25

b) x=11-8

x=3

5²=x²+y²

25=9+y²

16=y²

y=√16

y=4