Question

Please answer the question number 23 with solution.

Answer 1

P=(22/7)r+2r
P=22r+14r/7
By substituting P
36=22r+14r/7
36×7=36r
r=7

Answer 2

Answer:

r=7

Step-by-step explanation:

we know that P=πr+2r and P=36

Its means P=πr+2r=36

Now,   P=πr+2r

          36=r(22/7 +2)

          36=r{(22+14)/7}

          36=r(36/7)

36×7/36=r

           7=r

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