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Pertanyaan

The length of a rectangle exceeds its widthby 2 cm . If each dimension were increased by 3 cm , the area would be increased by 51 cm 2 . The width of original rectangleis equal to . ...

The length of a rectangle exceeds its width by . If each dimension were increased by , the area would be increased by . The width of original rectangle is equal to . ...

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N. Puspita

Master Teacher

Jawaban terverifikasi

Pembahasan

Pembahasan
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Asumsikan : Panjang = Lebar = Maka lebarnya : Maka, lebarawal persegi panjang tersebut adalah

Asumsikan :

Panjang = italic p equals italic l plus 2
Lebar = italic l

Maka lebarnya :

table attributes columnalign right center left columnspacing 0px end attributes row cell open parentheses italic p plus 3 close parentheses cross times open parentheses italic l plus 3 close parentheses end cell equals cell open parentheses italic p cross times italic l close parentheses plus 51 end cell row cell open parentheses italic l plus 2 plus 3 close parentheses cross times open parentheses italic l plus 3 close parentheses end cell equals cell open parentheses open parentheses italic l plus 2 close parentheses cross times italic l close parentheses plus 51 end cell row cell open parentheses italic l plus 5 close parentheses cross times open parentheses italic l plus 3 close parentheses end cell equals cell italic l squared plus 2 italic l plus 51 end cell row cell italic l squared plus 8 italic l plus 15 end cell equals cell italic l squared plus 2 italic l plus 51 end cell row cell italic l squared minus sign italic l squared plus 8 italic l minus sign 2 italic l end cell equals cell 51 minus sign 15 end cell row cell 6 italic l end cell equals 36 row italic l equals 6 end table

Maka, lebar awal persegi panjang tersebut adalah 6 space cm

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