Question

3 Find the area of a square lawn whose perimeter is 360 m​

Answer 1

Answer:

4 x Side = Perimeter

4 x Side = 360 m

Side = 360

4

Side = 90

Area of Square = Side²

= 90²

= 90 x 90 = 8100

Area of Square is 8100.

Answer 2

Concept: Here we use the concepts of area & perimeter of a square.

To find the perimeter & area of the square we use the following formulas

The perimeter of the square $= 4a$

Area of the square= $a^{2}$

$a$ is the side of the square.

Given: the perimeter of a square lawn of 360 m

To find: Area of the square

Solution:

First, we find the side of square 'a'

perimeter= 4a

360 = 4a

$a=\frac{360}{4}$

a= 90 m

now an area of the square = $a^{2}$

                                            = $(90)^{2}$

                                            = $8100 m^{2}$

Hence the area of a given square is  $8100 m^{2}$