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21-11-2017
Mathematics

contestada

A rectangle has an area of 330 cm2 and a perimeter of 74 cm. what are its dimensions?

Respuesta :

30-11-2017

Perimeter of rectangle=2(l+b) 2(l+b)=74 (l+b)=37 l=37-b Area of rectangle=l*b 330=l*b 330=(37-b)b 330=37b-b^2 b^2-37b+300=0 By solving we get b=12cm and b=25 is neglected as b<l l=25cm and b=12cm

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