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Y^2=-20X ലാക്റ്റസ് റെക്ടത്തിന്റെ നീളം കണ്ടെത്തുക

A40

B15

C20

D25

Answer:

C. 20

Read Explanation:

y^2 = -20x a = -20/4 = -5 ലാക്റ്റസ് റെക്ടത്തിന്റെ നീളം = 4a = 20 നീളം എപ്പോഴും പോസിറ്റീവ് ആയിരിക്കും


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