Question

full sentence answer- Q1. The length & breadth of a rectangular field are 50 m & 21 m respectively.

Find its (a) perimeter (b) area. ​

Answer 1

Step-by-step explanation:

perimeter of a rectangle is 2(l+b)

=2(50+21)

=2(71)

=142cm

therefore,the perimeter of rectangular field is 142cm.

area of a rectangle is length*breadth

=50*21

=1050m^2

therefore the area of the rectangular field is 1050m^2

Answer 2

Given :

• Length of a rectangular field = 50 m
• Breadth of a rectangular field = 21 m

To find :

• Perimeter of the rectangular field
• Area of the rectangular field

Knowledge required :-

→ Formula to calculate perimeter of rectangle :-

• Perimeter of rectangle = 2(l + b)

→ Formula to calculate area of rectangle :-

• Area of rectangle = l × b

where,

• l = length of the rectangle
• b = breadth of the rectangle

Solution :

(a) Perimeter

⠀⠀⠀⇒ Perimeter = 2(l + b)

⠀⠀⠀⇒ Perimeter = 2(50 + 21)

⠀⠀⠀⇒ Perimeter = 2(71)

⠀⠀⠀⇒ Perimeter = 142

Periemeter of the rectangular field = 142 m

(b) Area

⠀⠀⠀⇒ Area = l × b

⠀⠀⠀⇒ Area = 50 × 21

⠀⠀⠀⇒ Area = 1050

Area of the rectangular field = 1050 m²

━━━━━━━━━━━━━━━

Know MorE :-

Some related formulae :-

• Perimeter of reactangle = 2(l + b)
• Diagonal of rectangle = √l² + √b²
• Area of square = side × side
• Perimeter of square = 4 × side
• Diagonal of square = √2a