Question

find the perimeter of the above figure

Answer 1

radius of semicircle = 2.1cm
circumference = π×21/10
= 22/7×21/10
= 66/10 = 6.6cm
perimeter = 6.6+3+3 = 12.6cm
please mark it as the brainliest answer

Answer 2

Answer:

23.388

Step-by-step explanation:

perimeter of the Triangle ABO = AO + AB + BO

                                                     = 3 + 4.2 + 3

                                                     = 10.2 cm

Perimeter of the Semicircle without the

                             Diagonal          = 1/2 π d

                                                       = 1/2 × 3.14 × 8.4

                                                       = 1.57 × 8.4

                                                       = 13.188 cm

Therefore, Total Perimeter of the Figure = 13.188 + 10.2

                                                                      = 23.388 cm