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In the diagram below, the area of triangle BCD is 60. What is the area of triangle BAD?

 

 Nov 8, 2018
 #1
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Area of triangle = 1/2 bh

60 = 1/2 (15) h

8 = h

 

Quadrilateral area = h x (b1 + b2)/2 = 8 x (15+9)/2 =  96 sq units

 

96 -60 = triangle BAD area = 36 sq units   (fixed typo)

 Nov 8, 2018
edited by ElectricPavlov  Nov 8, 2018
 #2
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Thank you!  You make a mistake though, the answer should be 36 not 30.

 Nov 8, 2018
 #3
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Thanx...I fixed it.

ElectricPavlov  Nov 8, 2018

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