# Chapter 4 - Decimals - 4.4 Multiplying Decimal Numbers - 4.4 Exercises - Page 294: 48

The perimeter before 1929 was 21.09 inches. The perimeter after 1929 is 17.50 inches. The perimeter today is 3.59 inches less than the bills printed before 1929.

#### Work Step by Step

(a) $7.4218+7.4218+3.125+3.125= 21.09$ $6.14+6.14+2.61+2.61= 17.50$ (b) $21.09 - 17.50 = 3.59$

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