The area of a rectangle is expressed as (14r + 21) square feet. If the width of the

Mathematics

1 answer:

lilavasa [31]3 years ago

8 0

Answer:

L = 2r + 3

Step-by-step explanation:

Given parameters:

Area of rectangle = 14r + 21

Width of the rectangle = 7ft

Unknown:

Length of the rectangle = ?

Solution:

If the length of the rectangle is designated as L;

Area of a rectangle = Length x width

Now insert the parameters:

14r + 21 = L x 7

L = $\frac{14r + 21}{7}$

L = 2r + 3

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