Question

A greeting card has an area 90 cm2. Between what two whole numbers is the length of its
side?​

Answer 1

Answer:

I think the length is between 9 to 10

Step-by-step explanation:

as we know that the area of the greeting card(rectangle)=l×b

l×b=90

so by this we know that the lb=90

if we estimate that the breadth will be 9 then the length should be the 10

so i think the answer is 9 to 10

Answer 2

The Length and width of the Greeting card is $10\ cm\ and\ 9\ cm$

Step-by-step explanation:

Given,

Area of greeting card is $90\ cm^{2}$

We know,

A Greeting card has rectangle shape.

Where rectangle have length and width.

If it is square. Then,

$Side^{2}=90$

⇒$Side^{2}=2\times 3\times 3\times 5$

⇒$Side=3\sqrt{10}$

∴ $Side=9.486\ cm$

∴ The side lies between $9\ cm\ and\ 10\ cm$

Hence, The Length and width of the Greeting card is $10\ cm\ and\ 9\ cm$