Q39 of 131 Page 226

Fill in the blanks to make the statements true.
If a wire in the shape of a square is rebent into a rectangle, then the__ of both shapes remain same, but _ may vary.

When we change the shape, then the perimeter remains same as the length of wire is fixed, but area changes as shape changes.

The area of a semicircle of radius 4r is

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Perimeter of a regular polygon = length of one side × ___________.

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Area of the square MNOP of Fig. 9.24is 144 cm². Area of each triangle is_______.

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In Fig. 9.25, area of parallelogram BCEF is ________cm² where ACDF is a rectangle.

Fill in the blanks to make the statements true.If a wire in the shape of a square is rebent into a rectangle, then the________ of both shapes remain same, but _______ may vary.