Question

What is the length of BC in the right triangle below?
B
3
A
15
C

Answer 1

Given

Find

Length of BC

Step-by-step explanation

here , the right angle triangle is given , so we apply pythagoras theorem ,

`BC^2=AC^2+AB^2`

SO ,

`\begin{gathered} BC^2=15^2+3^2 \\ BC^2=225+9 \\ BC^2=234 \\ BC=√(234) \end{gathered}`

Final Answer

Hence , the correct option is A.