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

Question

asked Dec 19, 2018 129k views

2 Answers

Daverocks · Answer 1 · 2018-12-24T17:18:05+0000

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