Question

If the perimeter of a semicircular protractor is 36 cm, find the diameter? ​

Answer 1

Answer:

diameter is equal to 22.90

Step-by-step explanation:

$\pi \times r \: = \: 36 \\ (22 \div 7) \: \times r = 36 \\ r = 11.45 \\ d = 22.9$

Answer 2

Answer:

Step-by-step explanation;

2πr/2+d=36

πr+2r=36

r(π+2)=36

r=36/π+2

r≈7×2=14=d