The perimeter of a rectangle is 130 cm. If the breadth of the rectangl

1.	The perimeter of a rectangle is 130 cm. If the breadth of the rectangle 30 cm, find its length. Also find the area of the rectangle.
Answer» p = perimeter of a rectangle = 130 cm l = length of a rectangle = l = ? b = breadth of a rectangle = b = 30 cm p = 2 (l + b) 130 = 2l + 2 × 30 2l = 130 – 60 = 7 I = \(\frac{70}{2} = 35cms\) ∴ Area of a rectangle = l × b = 30 × 35 = 1050 sq.cms

The perimeter of a rectangle is 130 cm. If the breadth of the rectangle 30 cm, find its length. Also find the area of the rectangle.

Answer»

p = perimeter of a rectangle = 130 cm

l = length of a rectangle = l = ?

b = breadth of a rectangle = b = 30 cm

p = 2 (l + b)

130 = 2l + 2 × 30

2l = 130 – 60 = 7

I = \(\frac{70}{2} = 35cms\)

∴ Area of a rectangle = l × b = 30 × 35

= 1050 sq.cms