Question

Help pls!! .........................................................................

Answer 1

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 = $\sqrt{65}$ ~8

b) sa= c

a2+b2=c2

7^2 + (15-4)^2

49+121 = c2

c= $\sqrt{170}$ = 13

I hope im right!!