exam Maths Puzzle Numerical Ability

Please help me solve this word problem:

A ladder is resting against a wall. The top of the ladder touches the wall at a height of 18 feet. Find the length of the ladder if the length is 6 feet more than its distance from the wall.

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exam Other Question
Please find:

the distance (-2,3,1) and (4,5,-1)

and

midpoint (-2,3,1) and (4,5,-1)

Thanks i need step by step help please

Write an equation of the line that passes through the given point P and has the given slope m

19. P(-8,-2),m-2/3