CBSE Class 7 Answered
a wire is in the shape of the rectangle whose dimensions are 12 cm* 9 cm. if it is rebent in the form of a square find the side of the square
Asked by mails.anita | 21 Jan, 2020, 06:43: PM
Expert Answer
A wire is in the shape of the rectangle whose dimensions are 12 cm* 9 cm.
Let l be the length and b be the width of a rectangle.
Here length of the wire should be perimeter of a rectangle.
Perimeter of rectangle = 2(12 + 9) = 42 cm
A rectangle is rebent in the form of a square.
Hence, Perimeter of rectangle = perimeter of a square
42 = 4x where x cm be the side of a square.
x = 10.5 cm
The side of the square is 10.5 cm.
Answered by Sneha shidid | 22 Jan, 2020, 09:03: AM
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