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natima [27]
3 years ago
15

In the diagram below, the area of $\triangle BCD$ is 60. What is the length of side $\overline{BC}$?

Mathematics
1 answer:
Phantasy [73]3 years ago
8 0

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

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