Question

help me please!!!!!!!!!!!!!​

Answer 1

Answer:

Perimeter = 51.4 cm

Step-by-step explanation:

We have,

D = 20 cm

Now,

Circumference of a semicircle

= Circumference of circle ÷ 2

Then,

C (semicircle) = 2πr/2

C = πr

Here,

D = 20 cm

So,

r = 20/2

r = 10 cm

C = 10π

Now,

Perimeter = Circumference + Diameter

So,

P = 10π + 20

P = 10(π + 2)

Taking π = 3.14

P = 10(3.14 + 2)

P = 10 × 5.14

P = 51.4 cm

Hence,

Perimeter = 51.4 cm

Hope it helped and believing you understood it....All the best

Answer 2

Answer:

Diameter = 10cm

therefore, Radius = 10/2 = 5cm

according to the question

perimeter of figure = circumference of semi circle +diameter

= pye + d

= 22/7 × 5 × 10 110/7 + 10

= 25.71 cm

therefore, the perimeter of the given figure is 25.71 cm

Step-by-step explanation:

don't write pye write the symbol of pye