A ladder of length is 4m is placed on wall of height 2m the distance between the base of wall and lower ebb of ladder is:
- 3.5 m
- 4 m
- 5 m
- 4,5m
Explanation
| .A2+B2=C2 A2+22=42 A2+4=16 A2=16-4= 12 A2=12 A=3.5m |
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