The number of square centimeters in the area of a rectangle is the same as the number of centimeters inthe perimeter. Ifthe diagonal is 3root5 cm. find its sides.

Asked by vikasg13.hardware | 7th Aug, 2018, 05:32: PM

Expert Answer:

begin mathsize 18px style straight l cross times straight b equals 2 open parentheses straight l plus straight b close parentheses
straight l squared straight b squared equals 4 open parentheses straight l squared plus straight b squared plus 2 lb close parentheses
straight l squared straight b squared minus 8 lb equals 180
open parentheses lb close parentheses open parentheses lb minus 8 close parentheses equals 180
so space
lb equals 18 space and space lb minus 8 equals 10..... satisfies
straight l equals 6
straight b equals 3 end style

Answered by Arun | 14th Aug, 2018, 10:31: AM

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