Question

find the perimeter of adjoining figure which is a semicircle including its diameter is 10 cm​

Answer 1

Answer:

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Diameter of the circle (d)=10cm

Radius of the circle (r)=d/2=10/2=5cm

Total perimeter of the circle (P)=2πr

=31.43cm

Perimeter of the semi-circle= P/2

=15.71cm

Therefore,

Perimeter of the figure= (15.71+10)cm

= 25.71cm

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Answer 2

Answer:

Step-by-step explanation:

Diameter of circle = 10 cm

radius of circle = 10 /2 =5

circumference of circle = 2$\pi$r

perimeter = 2 X 3.14 X 5

                =31.4 X 1/2

                = 15.7

TOTAL PERIMETER =  CIRCUMFERENCE + DIAMETER = 15.7 + 10

                                                                                         = 25.7