Question

The perimeter of a semicircular protractor is 108 cm find diameter of the protractor

Answer 1

Answer:

perimeter of semi-circular protractor=108cm

perimeter of a semicircle=

where r is the radius of the semicircle

108cm=

108cm= (22÷7)×r

(108×7)÷22= r

∴r=34.364cm

also: diameter=2r

diameter= 2×34.364cm

∴diameter of semicircle=68.728cm

Read more on Brainly.in - https://brainly.in/question/1078962#readmore

Step-by-step explanation:

Answer 2

Answer:

Step-by-step explanation:

Perimeter= πd/2

108 = 3.14 * d * 0.5

d= 316/3.14 = 100.6