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

Question

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

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Everleigh 2 months 2021-10-09T19:08:28+00:00 2 Answers 0 views 0

Answers ( )

    0
    2021-10-09T19:09:56+00:00

    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

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    hope it helps you.

    0
    2021-10-09T19:10:13+00:00

    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

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