By considering the given pattern, write down the number of circles in
- Pattern 10
- Pattern 90
- Pattern 228
(a)
Pattern for the number of circles
Pattern 1: 1 x 4 + 2 = 6
Pattern 2: 2 x 4 + 2 = 10
Pattern 3: 3 x 4 + 2 = 14
Pattern 4: 4 x 4 + 2 = 18
Formula
Number of circles = Pattern number x 4 + 2
Number of circles for Pattern 10
= 10 x 4 + 2
= 42
(b)
Number of circles for Pattern 90
= 90 x 4 + 2
= 362
(c)
Number of circles for Pattern 228
= 228 x 4 + 2
= 914
Answer(s): (a) 42; (b) 362; (c) 914