Question

A circular flower bed has a diameter of 100 cm. A metal boundary costing rs.2 per meter place around it.
find
length of metal boundary that will be required to fence the flower bed twice.
cost of metal boundary required to fence twice.​

Answer 1

Answer:

boundary-circumference

circumference=2πr=dπ

π=3.14

=100×3.14

=314

Length of metal boundary to fence once=314

Length of metal boundary to fence twice=314×2=628cm

Cost of fencing=2₹/meter

628cm=628/100=6.28m

Total Cost=2×6.28m=12.56₹

Step-by-step explanation:

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Answer 2

Question:A circular flower bed has a diameter of 100 cm. A metal boundary costing rs.2 per meter place around it.

A circular flower bed has a diameter of 100 cm. A metal boundary costing rs.2 per meter place around it.find

A) length of metal boundary that will be required to fence the flower bed twice.

B) cost of metal boundary required to fence twice.

Step-by-step explanation:

A) Given diameter=100m

circumference of circle=π×d =3.14×100

C=314m

= Length of metal required to fence one time=circumference of the flower bed=31m

=Length of the metal required to make two rounds.

=314×2=628m

B) Cost of fencing=₹2per meter 628cm =628÷100=6.28 m

Total cost of metal boundary=2×6.28=₹12.56