Respuesta :

Answer:

a)8

b)13

Step-by-step explanation:

a) ar = c

a^2+b^2=c^2

4^2+7^2=c^2

16+49 = c2

c = [tex]\sqrt{65}[/tex] ~8

b) sa= c

a2+b2=c2

7^2 + (15-4)^2

49+121 = c2

c= [tex]\sqrt{170}[/tex] = 13

I hope im right!!