Question

PFVR ME AJUDEM É PARA AMANHÃ!!!!!!

Answer 1

(A)

${a}^{2} = {b}^{2} + {c}^{2}$

${a}^{2} = {28}^{2} + {21}^{2}$

${a}^{2} = 784 + 441$

${a}^{2} = 1225$

$\sqrt{1225 = a}$

$a = 35$

(B)

${a}^{2} = {b}^{2} + {c}^{2}$

${25}^{2} = {24}^{2} + {c}^{2}$

$625 - 576 = {c}^{2}$

$49 = {c}^{2}$

$\sqrt{49 = c}$

$7 = c$

(C)