(12x5+3x25)-8 12x5=60 3x25=75 60+75=135 135-8=127
2 answers:
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The ladder is 24 ft far up the wall and 26 ft long.
the foot of laddder=base=b=10ft
length of ladder=hypotenuse==?
height ladder up the wall=altitude=x=-2 =? (according to condition)
by using Pythagoras's theorem
=
+
⇒ =
+
⇒ =
-4
+100
⇒
⇒ =26ft
also x=-2=26-2=24ft
putting the obtained values in Pythagoras's theorem
⇒
⇒ 676=100+576
⇒ 676=676
hence the given solution is correct.
To learn more about Pythagoras's theorem, click here
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