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timurjin [86]
3 years ago
6

Draw a triangles with sides of 9 cm, 7 cm, and 5 cm. Find its perimeter

Mathematics
2 answers:
IceJOKER [234]3 years ago
6 0

The perimeter is 21 cm.

thanks

rjkz [21]3 years ago
4 0

Answer:

12 + √74 cm

Step-by-step explanation:

The <em>perimeter </em>(literally meaning "around measure") is the length around an area, shape, or boundary. Here, we have a right triangle, and the legs of that right triangle measure 5 cm and 7 cm. Using the Pythagorean theorem, we can find the hypotenuse (we'll call it h):

5^2+7^2=h^2\\25 + 49=h^2\\74=h^2\\\sqrt{74}=h\\

Adding all the lengths together, we find a perimeter of

5 + 7 + √74 = 12 + √74 cm

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