Question 1194526
In triangle ABC, with right angle B, side AB is 18 units long and side AC is 23 units long. What is the length of side BC, to the nearest unit?

 triangle ABC is right triangle, so use Pythagorean theorem

given:
{{{AB =18}}} units 
{{{ AC= 23}}} units

{{{(AC)^2=(AB)^2+(BC)^2}}}

{{{(BC)^2=(AC)^2-(AB)^2}}}........substitute given

{{{(BC)^2=23^2-18^2}}}

{{{(BC)^2=529-324}}}

{{{(BC)^2=205}}}

{{{BC=sqrt(205)}}}

{{{BC=14.317821063276353}}}

side {{{BC}}} to the nearest unit is {{{BC=14}}}