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Answered by
2
Answer:
16 is the correct answer
Step-by-step explanation:
MN² = LN² - LM²
= 20² - 12²
= 400-144
= 256
MN = 16 CM
Answered by
1
Answer:
mn = 16 cm
Step-by-step explanation:
using pythagoras theroem
lm^2+mn^2 = ln^2.
Hence 12^2 + mn^2 = 20^2
144+ mn^2 = 400
256 = mn^2
mn = √256
mn = 16 cm
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