Question

a wire in the form of circle of radius 7m is straightened and then transformed into a square .find the change in area​

Answer 1

Answer:

Step-by-step explanation:

area of a circle =$pi$ r²

area = 22÷7 *7*7 = 154 cm²

circumference of circle= 2Л r

                                     = 2 * 22/7 * 7

                                     = 44cm

circumference of circle= perimeter of square

44= 4S

S = 11 CM

area of square= s²

                        = 11²

                        = 121 cm²