Question

Rani wants to make curtains for her window as shown in figure. The window is in the shape of a rectangle whose width and height are in the ratio 2:3 . The area of the window is 9600 sq.cm
1. What will be the perimeter of window
[(a) 200 cm (b) 100 cm (c) 400 cm (d) 450 cm ]

Answer 1

Step-by-step explanation:

2x × 3x =9600

6x =9600

x = 9600÷6

× = 1600

2x +3x = ??

5x = 5(1600)

8000 is the perimeter I think (=

Answer 2

Given : The window is in the shape of a rectangle whose width and height are in the ratio 2:3 . The area of the window is 9600 sq.cm

To Find :   perimeter of window

Solution:

shape of a rectangle whose width and height are in the ratio 2:3 .

width = 2x

Height = 3x

Area = width * height

= 2x * 3x

= 6x²

6x²  = 9600

=> x² = 1600

=> x = 40

Perimeter = 2(2x + 3x)

= 10x

= 10 (40)

= 400 cm

perimeter of window is 400 cm

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