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Find the number of rectangles in the adjoining figure(2 squares is also considered a rectangle):
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Find the number of rectangles in the adjoining figure(2 squares is also considered a rectangle):

Find the number of rectangles in the adjoining figure(2 squares is also considered-example-1
User Paul Keen
by
7.6k points

1 Answer

3 votes
The formula is:
12 6
∑ n · ∑ n =
1 1
= ( 12 + 11 + 10 + 9 + 8 + 7 + 6 + 5 + 4 + 3 + 2 + 1 ) · ( 6 + 5 + 4 + 3 + 2 + 1 ) =
= 78 · 21 = 1638 rectangles
Answer: C ) 1638
User Kutsan Kaplan
by
7.1k points
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