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In the figure shown, ABCD is a rectangle. If AD = 6, AB = 8, DE = 5, w
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27 Sep 2017, 11:36
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In the figure shown, ABCD is a rectangle. If AD = 6, AB = 8, DE = 5, what is the area of triangle BDE? A. 9 B. 12 C. 15 D. 16 E. 18 Source : Experts Global
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In the figure shown, ABCD is a rectangle. If AD = 6, AB = 8, DE = 5, w
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27 Sep 2017, 15:15
pushpitkc wrote: Attachment: Capture_PS.PNG In the figure shown, ABCD is a rectangle. If AD = 6, AB = 8, DE = 5, what is the area of triangle BDE? A. 9 B. 12 C. 15 D. 16 E. 18 Source : Experts GlobalArea of triangle BDE = \(\frac{b*h}{2}\) Base = DE = 5 Height = 6 Height of triangle = height of rectangle AD = BC = 6 Area of triangle BDE = \(\frac{5*6}{2}=15\) ANSWER C Hmm. Is the rectangle's length useless information? Or are we not to assume the triangle's height = height of rectangle? Not sure why not.
If not, calculate the area of the rectangle and subtract areas of the other two triangles:
Area of rectangle ABCD: (6 * 8) = 48
Area of triangle ABD: \(\frac{6*8}{2}\) = 24
Area of triangle BCE: base = CE = 3 because CE = (AB  DE) = (8  5) = 3 height = BC = AD = 6 Area of BCE: \(\frac{3*6}{2}\) = 9
Rectangle area  Area of two triangles = Area of triangle BDE
48  24  9 = 15
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Re: In the figure shown, ABCD is a rectangle. If AD = 6, AB = 8, DE = 5, w
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29 Sep 2017, 08:06
Easier way is that AD=6, DE =5, so according to triangle area formula, ab/2, 6*5/2=15; C Sent from my SMJ120H using GMAT Club Forum mobile app




Re: In the figure shown, ABCD is a rectangle. If AD = 6, AB = 8, DE = 5, w &nbs
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29 Sep 2017, 08:06






