Question

If U = л(r + h), find the value of r when U = 16 1/2 and h = 2. (Take л to be π 22 7 .)answer should be 3 whole 1/4 ​

Answer 1

Answer:

The value of r is 3 1/4

Step-by-step explanation:

Given : U = π (r +h)

           U = 16 1/2

          h = 2

          π = 22/7

Solution : U = π (r +h)

By substituting the given values, we get      

      16 1/2 = 22/7 x (r + 2)

       33/2 x 7/22 = r +2

                       21/4 = r +2

                          r  = 21/4 - 2

                             = (21 - 2x4)/4

                             = (21-8)/4

                             = 13/4

                             = 3 1/4