If the diameter of the semicircle is 1.7 centimeters, what is the perimeter of this figure in centimeters? 25.7 cm 26.669 cm 29.338 cm 5.069 cm

Question

asked Sep 28, 2020 123k views

2 Answers

Jeorge · Answer 1 · 2020-10-03T02:47:32+0000

Answer:

$5.069\ cm$

Explanation:

we know that

The perimeter of the figure is equal to the circumference of a semicircle plus two times the length of
mm

Find the circumference of a semicircle

The circumference of a semicircle is equal to

$C=\pi D/2$

we have

$D=1.7\ cm$

substitute

$C=(3.14)(1.7/2)=2.669\ cm$

convert
mm to cm

$12\ mm=1.2\ cm$

The perimeter of the figure is equal to

$2.669\ cm+2*1.2\ cm=5.069\ cm$