Question

If the perimeter of a semicircular protractor is 72cm. Find the diameter of the protractor.​

Answer 1

Answer:

HEY MATE

given ; -

perimeter of semi-circular protractor = 72 cm.

now , it gives out that ; -

=> 72 cm = πr + 2r

=> 72 cm = r ( π + 2 )

=> 72 cm = r ( 22 + 14 ) / 7

=> 72 cm = r ( 36 ) / 7

=> r = 72 × 7 / 36

=> r = 14 cm.

hence ,

the diameter of the protractor is 14 cm.

PLz mark it as a BRANILIST answer and follow me

Answer 2

Answer:

28cm

Step-by-step explanation:

perimeter of semi circle=r(π+2)

72cm=r(π+2)

72=r(22/7+2)

72=r(3.14285714+2)

72=r(5.14285714)

72÷5.14285714=r

14=r

d=14×2

d=28cm

.

.

.

hope it helps you.