Question

find the perimeter and area of each of the following shapes represented by bold line. Please answer correctly it is 50 point Question. ​

Answer 1

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Answer 2

Solution:-

given : - d = L = 28 , B = 16

Area of rectangle = L * B

= 28 * 16 = 448 cm²

Area of semicircle = π * r²/2

for r = d / 2 => 28/2 = 14

Area of semicircle = 22/7 * 14²/2 = 308 cm²

hence add

Area of semicircle + Area of rectangle

=> 448 + 308 = 756 cm²

perimeter of semicircle = (2 π * r² )/2

= ( 2 * 22/7 * 14² )/2

= ( 1232)/2 = 616 cm

perimeter of rectangle = 2* ( L + B )

= 2 * (28 + 14 )

= 2 * ( 42)

= 84 cm

hence add

perimeter of semicircle + perimeter of rectangle

= 616 + 84 = 700 cm - 56 cm =

644 cm perimeter.

i hope it helps you.