A 10-foot ladder is leaning against a wall. The bottom of the ladder is 4 feet from the wall as shown in the picture.
2 answers:
Answer:
9ft. (B)
Step-by-step explanation:
Pythagoras theorem( a²+ b²= c²)
=a²+4²=10²
a²+16=100
a²=100-16
a²=84
a=√84
=9.1
approx. =9
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