Question

Find the total cost of paving a circular field around its perimeter radius of 7cm at Rs10/cm​

Answer 1

Correct Question :

• Find the total cost of fencing a circular field around its perimeter radius of 7cm at Rs10/cm.

Given :

• Shape = Circle
• Radius of the field = 7cm
• Rate of fencing = Rs 10 per cm

To Find :

• The total cost of fencing a circular field.

Formula :

• Circumference/Perimeter of Circle = 2πradius

Solution :

Finding the circumference of the field :

• Circumference of Field = 2πr
• Circumference of Field = 2 × 22/7 × 7
• Circumference of Field = 2 × 22
• Circumference of Field = 44cm

Finding the total cost of fencing :

• Total cost of fencing = Circumference of the field × Rate of fencing
• Total cost of fencing = ₹ (44 × 10)
• Total cost of fencing = ₹ 440

Therefore :

• The total cost of fencing the field is Rs 440

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