The cost of wire to purchase is Rs 264.
Step-by-step explanation:
Given,
The diameter of the circular garden is 21 m
The radius(r) = [tex]\frac{21}{2}[/tex] m
To find, the length of wire of the fence we need to find the circumference.
Formula
The circumference of the circle = 2πr meter
=2×[tex]\frac{22}{7}[/tex] ×[tex]\frac{21}{2}[/tex] m
=66 meter
So, the length of the wire = 66 m
The cost of wire Rs 4 per meter.
The total cost = Rs 4 × 66
= Rs 264
