Question

A gardener wants to fence a circular garden of diameter 21 metre find the length of the Rohini to purchase If You Mix to round off fence also find the cost of rupees if it is cost rupees Four Square take Pi is equal to 22 upon 7

Answer 1

Solution- diameter of the circular garden= 21 m

radius= 21/2 m

circumference= 2πr

∴ circumference of the circular garden= 2*22/7*21/2 m

                                                                =22*3 m=66 m

since, the rope makes 2 round of fence.

∴length of the rope= 2* (circumference of the garden)

                               = 2*66 m= 132 m

    thus , the length of the required rope =132 m

now,      cost of the rope= rs 4 *132= rs 158    

Answer 2

Solution- diameter of the circular garden= 21 m

radius= 21/2 m

circumference= 2πr

∴ circumference of the circular garden= 2*22/7*21/2 m

                                                                =22*3 m=66 m

since, the rope makes 2 round of fence.

∴length of the rope= 2* (circumference of the garden)

                               = 2*66 m= 132 m

    thus , the length of the required rope =132 m

now,      cost of the rope= rs 4 *132= rs 158    

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