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nordsb [41]
4 years ago
9

the length of a rectangle is four times its width. the rectangle has an area of 1024cm^2 work out the width of the rectangle

Mathematics
2 answers:
olga2289 [7]4 years ago
7 0
The width is 16 so the length is 64  (TO clarify W=16)

Hope this helps :)
Papessa [141]4 years ago
6 0

Answer:

Area of a rectangle is given by:

A = lw            ....[1]

where

l is the length

w is the width of the rectangle respectively.

As per the statement:

the length of a rectangle is four times its width.

⇒l = 4w

It is also given that: area of rectangle is 1024 cm square

Substitute the given values in [1] we have;

1024=(4w)w

⇒1024=4w^2

Divide both sides by 4 we have;

256 = w^2

or

w^2 =256

Taking square root both sides we have;

w = \sqrt{256} = 16 cm

Therefore, the width of the rectangle is, 16 cm

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