bellsadie404 bellsadie404
  • 02-05-2022
  • Mathematics
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The length of a rectangle is five time it’s width. If the perimeter of a rectangle is 84ft, find its area

The length of a rectangle is five time its width If the perimeter of a rectangle is 84ft find its area class=

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mkmkaleb
mkmkaleb mkmkaleb
  • 02-05-2022

Answer:

Area = 245 ft

(Width

Step-by-step explanation:

l = 5w

Where l is length and w is width.

We also know that the perimeter is 84 ft, so:

2l + 2w = 84

Now we can plug in 5w for l since we found the equality earlier:

2(5w) + 2w = 84

and then solve for w:

10w + 2w = 84

12w = 84

w = 7

so

l = 5 × 7

l = 35

The length is 35 and width is 7 so

the area of the rectangle is

[tex]7 \times 35 = 245ft [/tex]

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