Question

How the answer came 6cm.Plz explain me.Day after tomorrow is my maths exam.Explain me as soon as possible.☺️☺️​

Answer 1

Answer:

Step-by-step explanation:

the answer will be 6cm becoz

area of figA

area of rectangle=l*b

                           = 10*5

                          = 50cm2

area of rectangle b = x*5

area of rectangle c  = 5*12

                                 = 60cm2

ATQ,

Areas of a+b+c=140cm2

50+5x+60=140

110+5x=140

5x=140-110

x=30/5

x=6cm