Question

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

Answer 1

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

Answer 2

Answer:

16.5 I got 100%

Step-by-step explanation: