Question

The area and perimeter is needed

Answer 1

Answer:

Perimeter = 30 + 4$\pi$  ≈42.56 cm

Area = 88 - 8$\pi$ ≈ 62.88 cm^2

Step-by-step explanation:

area of rectangle = 11* 8 = 88

Perimeter of rectangle = 38

perimeter of circle = 2$\pi$4 = 8$\pi$

area of circle =  $\pi 4^{2}$ = 16 $\pi$

Answer 2

Answer:

Step-by-step explanation:

Area of shaded region = Area of rectangle - area of semi circle

Rectangle:

length = 11 cm

Width = diameter of circle = 4 + 4 = 8 cm

Area 1 =  length * width

          = 11 * 8

          = 88 sq. cm

Circle:

radius  = r = 4 cm

Area of semicircle =  $\dfrac{1}{2}\pi r^{2}$

                             $=\dfrac{1}{2}*3.14*4*4\\\\= 25.12 \ cm^{2}$

Circumference of semicircle = $\dfrac{2\pi r}{2}=\pi r$

                                               = 3.14 * 4

                                               = 12.56 cm

Area of the shaded region = 88  - 25.12 = 62.88 = 63 square cm

Perimeter of shaded region = 11 + 8 + 11 + circumference of semicircle

                                                 = 11 + 8 + 11 + 12.56

                                                 = 42.56

                                                 = 43 cm