You can put this solution on YOUR website! 14 an extension ;
ladder rests up a wall
If the ladder is extended a further without moving the foot of the ladder, then it will now rest further up the wall
How long is the extended ladder?
let = original length of the ladder = the distance of the foot of the ladder from the wall
<--- eq. 1
subs from eq. 1
<---- length of extended ladder
15)
an equilateral triangle has area .
Find the length of its sides.
.........eq.1
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Find altitude in terms of side :
Since the triangle is equilateral, all sides are "":
Draw an altitude from the vertex to the base.
You have a right triangle with base = and hypotenuse =
The altitude is the 3rd side:
substitute in eq.1
->the length of each side
and now we can find the length of altitude too:
