Question

calcule o valor de x ultilizando o vor de Pitágoras

Answer 1

A)

${x}^{2} = {15}^{2} + {20}^{2} \\ {x}^{2} = 225 + 400 \\ {x }^{2} = 625 \\ x = \sqrt{625} \\ \boxed{x = 25m}$

B)

${10}^{2} = {8}^{2} + {x}^{2} \\ {x}^{2} + 64 = 100 \\ {x }^{2} = 100 - 64 \\ {x}^{2} = 36 \\ x = \sqrt{36} \\ \boxed{x = 6cm}$

Answer 2

a)25 b)6 regra do 3,4 e 5