Each pattern is made up of squares. By considering the pattern, give the number of squares in
- Pattern 9
- Pattern 66
- Pattern 401
(a)
Pattern for the number of squares
Pattern 1: 1 x 2 + 1 = 3
Pattern 2: 2 x 2 + 1 = 5
Pattern 3: 3 x 2 + 1 = 7
Pattern 4: 4 x 2 + 1 = 9
Formula
Number of squares = Pattern number x 2 + 1
Number of squares in Pattern 9
= 9 x 2 + 1
= 19
(b)
Number of squares in Pattern 66
= 66 x 2 + 1
= 133
(c)
Number of squares in Pattern 401
= 401 x 2 + 1
= 803
Answer(s): (a) 19; (b) 133; (c) 803