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In the diagram below, the area of angle BCD is 60. What is the length of side line BC?

 

 

 Nov 9, 2017
 #1
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Area of BCD  =   (1/2) * CD * BC  .....so.....

 

60  =  (1/2) * 15 * BC

 

60  =  (15 / 2) * BC        multiply both sides by  2 / 15

 

(2 / 15) * 60  =  BC

 

( 60 / 15) * 2  = BC

 

4 * 2  = BC

 

8  = BC

 

 

cool cool cool

 Nov 9, 2017
 #2
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thx again math whiz.

Guest Nov 9, 2017

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