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23 August, 21:49

A right triangle has a leg of 13 cm and a hypotenuse of 21 cm. What is the length of the other leg? Round to the nearest tenth.

8.0 cm

16.5 cm

4.7 cm

272.0 cm

+5
Answers (1)
  1. 23 August, 21:55
    0
    A^2+b^2=C^2

    13^2+b^2=21^2

    169+b^2=441 collect the like terms

    b^2=441-169

    b^2=272 get the square root of b and 272

    b=16.492422

    b=16.5 choice B
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