Question

pa) in a rectangle, length
b) In a rectangle, perimeter 5 m, breadth 90 cm, length = ?, area?
In a square, side - 8 cm, perimeter ?, area ?
soare, area = 81 cm', side ?, perimeter = ?​

Answer 1

Step-by-step explanation:

Breadth of given rectangle=90cm

Perimeter of given rectangle=5m=500cm. (1m=100cm)

Perimeter of any rectangle=2(length+breadth)

Length=

2(l+b)=500cm

2l+2b=500cm

2l+2(90)=500cm

2l+180=500cm

2l=500-180

2l=320

l=320/2

l=160cm

Area of rectangle=length*breadth

Area of given rectangle=90x180

=162000cmsquare

Side of given square=8cm

Perimeter of any square=4xside

Perimeter of the give square=4x8=32cm

Area of any square=sidexside

Area of given square=4x4=16

Area of any square=sidexside

Area of the given square=81cm2

Side of the given square=

$a ^{2} = 81 \\ a = \sqrt{81 } = 9cm$

Therefore side=9cm

Perimeter of any square=4xside

Perimeter of given square=4x9=36cm

Hope it will be helpful for you

Answer 2

Step-by-step explanation:

Step-by-step explanation:

Breadth of given rectangle=90cm

Perimeter of given rectangle=5m=500cm. (1m=100cm)

Perimeter of any rectangle=2(length+breadth)

Length=

2(l+b)=500cm

2l+2b=500cm

2l+2(90)=500cm

2l+180=500cm

2l=500-180

2l=320

l=320/2

l=160cm

Area of rectangle=length*breadth

Area of given rectangle=90x180

=162000cmsquare

Side of given square=8cm

Perimeter of any square=4xside

Perimeter of the give square=4x8=32cm

Area of any square=sidexside

Area of given square=4x4=16

Area of any square=sidexside

Area of the given square=81cm2

Side of the given square=

\begin{gathered}a ^{2} = 81 \\ a = \sqrt{81 } = 9cm\end{gathered}

a

2

=81

a=

81

=9cm

Therefore side=9cm

Perimeter of any square=4xside

Perimeter of given square=4x9=36cm

Hope it will be helpful for you