In ∆ABC, a line through A cuts the side BC at D such

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In ∆ABC, a line through A cuts the side BC at D such that BD : DC = 4 : 5. If the area of ∆ABD = 60 cm², then the area of ∆ADC is

Using Rule 1, A

Let, AE ⊥ BC

∴	Area of ∆ABD
	Area of ∆ADC

⇒	60	=	BD
	∆ADC		CD

=	60	=	4
	∆ADC		5

∆ADC =	A60 × 5
	4

= 75 sq. cm.