Question

In these both figures below, can u find the y ?

Answer 1

Answer:

18

Step-by-step explanation:

4)     5Y = 5 x Y = 90° as it is half of 180°

y= 90/5 = 18°

4y = 4 × y          so if 5y = 90°     4y+1y =90°      ratio= 4:1        

so if we evaluate the ratios    4/5 ×90= 4×18= 72

                                                 1/5 ×90= 1×18 = 18

4y= 72           so y= 72/4 = 18

1y = 18           so y = 18/1 = 18

3y = 3 × y         so if 5y = 90°     3y+2y =90°      ratio= 3:2

so if we evaluate the ratios    2/5 ×90= 2×18= 36

                                                 3/5 ×90= 3×18 = 54

3y= 54           so y= 54/3 = 18

2y = 36           so y = 36/2 = 18

5) again its 5y half of 180°         so 5y = 90°     y= 18° (explained earlier ↑)

now here if 3y and 2y are added we get 5y and y = 18° (↑)

90° is divided into two ratios (2:3)

so if we evaluate the ratios    2/5 ×90= 2×18= 36

                                                 3/5 ×90= 3×18 = 54

3y= 54           so y= 54/3 = 18

2y = 36           so y = 36/2 = 18