kaiapa2023 kaiapa2023

16-03-2022
Mathematics

contestada

URGENT- A rectangle has an area of 210 cm 2 and a perimeter of 58 cm. What are its dimensions? (show work)

Respuesta :

ipenman123 ipenman123

16-03-2022

Answer:

L= 29-b

Step-by-step explanation:

A=210cm^2

A= L*b

210= (29-b) b

210= 29b-b^2

b^2-29b+210=0

b^2-15b-14b+210=0

b(b-15)-14(b-15)=0

(b-15)(b-14)=0

R=14 B=15

P-58cm

p=2(l+b)

58=2(l+b)

29= l+b

L= 29-b

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