A ladder 4.5 M long is placed against a wall in such a way that the foot of the ladder is 2.7 m away from the wall find the height of the wall to which the ladder reach
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root under(4.5)^2-(2.7)^2=3.6
h²=p²+ b²
(4.5)²=p²+(2.7)²
20.25=p²+7.29
p²=20.75-7.29=12.96
p=
=3.6m