द कॉस्ट ऑफ 15 बॉल 9 मीटर लोंग एंड 7 मीटर वाइड एट द रेट ऑफ रुपीस 10 स्क्वायर मीटर
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Step-by-step explanation:
Length of ladder =13 m.
BC=12m,AC=13 m.
In ΔABC,
AB2+BC2=C2 (Pythagoras theorem)
AB2=AC2−BC2
=132−122
=169−144
=25
∴AB=5 m.
∴ The distance of the foot of the ladder from the base of the wall =5 m
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