A rectangle is formed by joining two squares with area 49 cm2.
What is the perimeter of the rectangle?

Question

A rectangle is formed by joining two squares with area 49 cm2.
What is the perimeter of the rectangle?

asnaseer · Answer

if the area of a square is 49 cm2 then what do you think its side length would be?

anonymous · Answer

my bad asnaseer

asnaseer · Answer

@Jhannybean - that is not correct

asnaseer · Answer

@GirlByte - please answer the question I asked above - it will help you work out the answer to this question

anonymous · Answer

is the side length 24.5 or something

jhannybean · Answer

$$A = x^2 \iff 49=x^2 \implies x=\sqrt{49}= ~?$$

asnaseer · Answer

@GirlByte - if a square has a side length of x cm then its area would be $x^2$ cm2.

asnaseer · Answer

so you need to find the square root of 49 in order to get the side length

unanimoose · Answer

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anonymous · Answer

sooo the side length is 7 or am i wrong

asnaseer · Answer

perfect!

unanimoose · Answer

Say the side length was j.

$$j = \sqrt{49} --> \sqrt{49} \times 2$$

unanimoose · Answer

Yup.

asnaseer · Answer

@GirlByte - now put two of these squares together and see if you can work out the perimeter of the resulting rectangle

jhannybean · Answer

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