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solniwko [45]
3 years ago
9

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

Mathematics
1 answer:
ser-zykov [4K]3 years ago
6 0

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!!

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