£1.77
By Alice Bradshaw
2008
Alice Bradshaw
Note surface area = 134 x 169mm = 9246mm
Chad surface area = pi x r = pi x 3 = 28.2743mm
1 chad = (28.2743 ÷ 9246mm) x 100 = 0.3058% of £5
Value of 1 chad = 0.3058 x £5 ÷ 100 = 0.0153
Value of 116 chads = £0.0153 x 116 = £1.773644 = £1.77
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