The formula for the perimeter, P, of a rectangle is P = 2(1 + w), where l is the length and w is the width of the rectangle. If the perimeter of a rectangle is 400 cm and its width is 45 cm, what is its

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Robdll asked Jul 26, 2023

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21 votes

The formula for the perimeter, P, of a rectangle is P = 2(1 + w),

where l is the length and w is the width of the rectangle. If the
perimeter of a rectangle is 400 cm and its width is 45 cm, what
is its length?

Mathematics
high-school

Robdll asked Jul 26, 2023

by Robdll

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2 Answers

27 votes

Answer:
You he length of the rectangle is:
155 cm

Paul Schorey answered Jul 29, 2023

by Paul Schorey

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19 votes

Answer:

l=155cm

Explanation:

Given the following question:

P=2(l+w)

P=400cm

w=45cm

In order to find the length of the given rectangle complete the following steps.

400/2=200

200-45=155

l=155cm

Check your work:

l=155

w=45

P=2(155+45)

155+45=200

2*200

2*200=400

p=400cm

Hope this helps.