Question

How to find perimeter of figure in where the numbers is also put in the figure and question asked like=All the given shapes in the figure have the same area.ehich shape has the smallest perimeter?

Answer 1

Answer:

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this question is very vague, so I will use an example. let's say that the areas of a square and rectangle are given. their areas are both 36 cm2. now, we will not have any idea what the sides of the rectangle are, so at least one side must be given. let's say that they have given 4cm as one of the sides.

here is what we know:

area of the figures: 36cm2

breadth of rectangle: 4cm

and using this information, we get:

length of side of square: √36 = 6cm

length of rectangle: 36/4 = 9cm

now, we calculate the perimeter.

perimeter of square = 4 x sides = 4 x 6 = 24cm

perimeter of rectangle = 2(l+b) = 2(4+9) = 2 x 13 = 26cm

now, we compare.

perimeter of rectangle > perimeter of square.