adambeauregard87 adambeauregard87

03-06-2021
Mathematics

contestada

Find the perimeter of the semi circle window to the nearest tenth.
20 cm

Find the perimeter of the semi circle window to the nearest tenth 20 cm class=

Respuesta :

akposevictor akposevictor

08-06-2021

Answer:

628.3 cm

Step-by-step explanation:

The window has a semicircle shape = half of a circle

Perimeter of the window = ½(πr²)

Radius (r) = 20 cm

Plug in the value

Perimeter of the window = ½(π*20²)

= ½(π*400)

Perimeter of the window = 628.31853 ≈ 628.3 cm (nearest tenth)

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