a rectangle has a area of 380 meters what are the meaurements of the length and with if the ratio of the length and width are 5:19
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A = 380 and a/b=5/19 ⇒ a = 5b/19

A = a*b

380 = 5b/19 * b

380 = 5 b^2/19

b^2 = 380*19/5 = 1444 ⇒ b = sqrt1444 = 38

a = 5 * b/19 = 5*38/19 = 10

by Level 8 User (36.9k points)

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