A ladder 17cm long rests against a vertical wall. The foot of ladder is 8 cm away from the base of wall. How high up wall will ladder reach?
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Answer:
by using Pythagoras thoerem
Step-by-step explanation:
we have three 2 sides of triangle
hypotenuse c =17cm
base a=8cm
perpendicular b=?
so
c2=a2+b2
17=8+b
17-8=b
9=b
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