Please help, thanks.

Mathematics

1 answer:

Svetach [21]3 years ago

4 0

Look at the attached image (my handwriting is not the best).

Intersecting tangents are congruent. With this knowledge, we can find the unknown side lengths.

Add all the numbers in the image together.

16+16+8+8+9+9+6+6=78

78 cm is your answer.

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