Please help! Will give brainiest! (more than 5 points)

A = (4.5π + 18) cm²

P = 3π + 6(1 + √2) cm

Step-by-step explanation:

Give figure is a composite structure of one semicircle and one right triangle.

Therefore, area of the figure = Area of the semicircle + Area of the triangle

Area of the given semicircle =

Here r = radius of the semicircle

Area of the semicircle = [Given : AB = BC]

                                     = 4.5π cm²

Area of the triangle =

                                 =

                                 = 18 cm²

Total area = 4.5π + 18

             A = (4.5π + 18) cm²

Perimeter of the figure = Circumference of the semicircle + AB + AC

Circumference of the semicircle = πr

                                                      = 3π

AB = 6 cm

AC =

     =

     =

Perimeter 'P' = 3π + 6 +

                     = 3π + 6(1 + √2) cm

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the answer is 99.