3 years ago

PLEASE HELLPPPPPPPP.......

Mathematics

2 answers:

Ksivusya [100]3 years ago

5 0

Answer:

The other person had the best answer for your question but I think it might be c=9

Vanyuwa [196]3 years ago

4 0

Answer:

11in

Step-by-step explanation:

a^2+b^2=c^2 when c is the hypotenuse

10^2+sqrt21^2=c^2

100+21=c^2

121=c^2

11=c

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