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A rectangle measures 18cm by 12cm.(a) If each dimension is reduced by 2cm, by what percentage is:i). The perimeter reduced,(express your answer to four significant figures). (3mks) |
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Answer» Step-by-step explanation: 18cm by 12cm perimeter = 2(18+12) = 2(30) = 60 cm if each DIMENSION is REDUCED by 2cm perimeter= 2(16+10) = 2(26) =52cm percentage= 52/60*100 260/3 8.666% is reduced |
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