Asked by Ravneet
A painter uses a trestle to stand on in order to paint a ceiling. It consists of 2 stepladders connected by a 4 metre long plank.The inner feet of the 2 stepladders are 3 metre apart, and each ladder has slopping sides of 2.5 metres. How high of the ground is the plank?
Answers
Answered by
Steve
As usual, draw a diagram.
Assuming the plank is just long enough to join the tops of the ladders, there is a 1/2 m overlap on each end, above the sloping side. So, the height is
√(2.5^2 - .5^2)
Assuming the plank is just long enough to join the tops of the ladders, there is a 1/2 m overlap on each end, above the sloping side. So, the height is
√(2.5^2 - .5^2)
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