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nignag [31]
3 years ago
10

Find and explain how to find D.

Mathematics
1 answer:
almond37 [142]3 years ago
8 0
A = 80/2 = 40
b = 100/2 = 50

d = 180 -  (a+b)
d = 180 - (40+50)
d = 180 - 90
d = 90
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