Question

the areas of a square and rectangle are equal if the side of the square is 20 cm and the breadth of the rectangle 10 cm ,find the length of the rectangle and its perimeter ​

Answer 1

Answer:

40

Step-by-step explanation:

area of square=area of rectangle

a^2=lb

20×20=10L

L=40

Answer 2

Answer:

Step-by-step explanation:

Side of a square= 20 cm

Breadth of a rectangle = 10 cm

Length = ?

Area of a Square = Area of a Rectangle

side x side = length x breadth

20 x 20 = l x 10

∴ $l = \frac{20 * 20 }{10}$

∴ $l = \frac{400}{10}$

∴ l = length = 40 cm

now, perimeter of a rectangle = 2 ( l + b)

                                                    = 2 ( 40 + 10)

                                                    = 2(50)

                                                    = 100 cm.