Question

Science and Mathema Series - A 6 1. A rope of length 10m is placed on the ground surface to form a figure. Which of the following figure formed by this rope has the biggest area? a) Square b Rectangle c) Triangle d) Circle​

Answer 1

Answer:

the explanation is all have same area

Answer 2

Given:

Rope of length 10 $cm$

To Find:

Which figure has the biggest area formed by the rope = ?

Solutions:

Perimeter = 4s = 10

                      s = 10/4

Area that is covered by Square = $s^{2}$

                                                     = 6.25 $cm$

Perimeter for triangle = 3s = 10

                                        s = 10/3

Area of the equilateral triangle = $\sqrt{3} /4$ × $s^{2}$ = 4.81$cm$

To calculate radius, circumference of circle = 10

                                        2 Π$r$ = 10

                                           $r$ = 10/  2 Π

Area of the circle = Π $r^{2}$

                             = 3.14 × $r^{2}$

                             = 3.14 × 10/  2 Π ×10/  2 Π

                            =  15.92

 Circle has the biggest area in all the figure