Question

urgent answer me its urgent​

Answer 1

Answer: (i) - 28.86cm²

              (ii) - 69.625cm²

              (iii) - Not enough info

Step-by-step explanation:

(i)

Diameter of Circle = 4cm - 2cm

                               = 2cm

Hence, radius = 1cm

 

A(shaded region = A(Rectangle - A(Circle)

                            = l*b - πr²

                            = 8*4 - 3.14* 1*1

                            =32 - 3.14  

                            =28.76cm²      

(ii)

r = 5cm

Total Area = A(Rectangle) + A(Quadrant)

                  = l*b + πr²/4

                  = 10*5 + (3.14*5*5)/4

                  = 50 + 78.5/4

                  = 50 + 19.625

                  = 69.625cm²

(iii)

Not enough information. Base and height are needed to find area of triangle