Question 1177544: The area of the base of a rectangular desk telephone is 864 square centimeters. The length of the rectangular telephone is 5 centimeters longer than its width.
(a) What are the length and width, in centimeters, of the desk telephone?
(b) What are the length and width, in millimeters, of the desk telephone?
Answer by mananth(16946)   (Show Source):
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The area of the base of a rectangular desk telephone is 864 square centimeters.
The length of the rectangular telephone is 5 centimeters longer than its width.
let width be w
length = w+5
w(w+5) =864
w^2+5w-864=0
(w + 32)(w - 27)=0
taking positive value w=27
the length is 32 and width =27 cm.
the length is 320 mm and width is 270 mm
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