Question

. The perimeter of a square is 40 cm. A rectangle of length 20 cm has the same area as that of the square. Find the breadth of the rectangle.​

Answer 1

Answer:

5 cm

Step-by-step explanation:

Perimeter of a square 4a=40⇒a=10cm

Area=a2

=100cm2

Area of Rectangle =length×breadth=100

⇒B=100/20=5cm

Answer 2

Answer:

1 CM

first we need to find the area of rectangle with taking the value of breadth be X then we solve it by showing like this.

2×(l+b)

2× ( 20 + X ) = 40

just then solve it out